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      <title>Mineralogía Óptica UPTC🔬 by Julián Esteban Hernández Roca</title>
      <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC</link>
      <description>Preguntas sobre minerales, minerales formadores de las rocas, teoría, uso del microscopio, uso de las propiedades ópticas, entre otras.</description>
      <language>en-us</language>
      <pubDate>2022-04-18 18:12:56 UTC</pubDate>
      <lastBuildDate>2025-10-04 06:35:27 UTC</lastBuildDate>
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         <title>Reglas:</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2147359136</link>
         <description><![CDATA[<p><br/></p><ol><li><p>Colocar preguntas con o sin imágenes sobre algún tema de la asignatura y esperar la respuesta del compañero, monitor o profesora.&nbsp;</p></li></ol><p>(Si son fotografías de minerales en sección delgada subir Nicoles cruzados X y Nicoles paralelos // de la misma zona especificando el aumento del objetivo).</p><p><br/></p><ol start="2"><li><p>Comentar las publicaciones de sus compañeros si conoce y solo si está seguro de la respuesta.</p><p><br/></p></li><li><p>Mantener un vocabulario respetuoso y referente a la asignatura.</p></li></ol><p><br/></p>]]></description>
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         <pubDate>2022-04-18 18:24:22 UTC</pubDate>
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      <item>
         <title>Partes del microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2147369018</link>
         <description><![CDATA[<div>El microscopio petrográfico se utiliza para determinar las propiedades ópticas, identificación de minerales, estudio de texturas, relaciones entre los minerales y clasificación de rocas. Se diferencia de los biológicos por tener un sistema de polarización de la luz (polarizador y analizador), la platina es giratoria y utiliza accesorios adicionales como los compensadores y el lente de Bertrand.<br><br></div><ul><li><strong>Los binoculares:</strong> Por donde el usuario puede observar sin la interferencia de la luz externa las propiedades ópticas de los minerales o las rocas. Tienen una escala graduada que sirve como referencia y para medir los minerales.</li><li><strong>Lente de Bertrand: </strong>Sistema de lentes sobre el analizador, con un sistema de enfoque (FOCUS). Se utiliza junto con la iluminación conoscopica, el objetivo de 40x y los compensadores para observar figuras de interferencia en la determinación de los signos ópticos.</li><li><strong>Ranura para lentes auxiliares (compensadores):</strong> En ella se colocan filtros accesorios llamados compensadores. El compensador de Landa o lámina de Yeso&nbsp; tiene un retardo de 530nm, el compensador de cuña de Cuarzo o 6Landa tiene un retardo variable. Esto produce que el rayo vibre perpendicular a la dirección de ingreso al compensador a 45° dirección N-S del microscopio.</li><li><strong>Revólver con objetivos: </strong>Para cambiar los objetivos se utiliza el revólver. Este cuenta con 4 objetivos (4x, 10x, 20x y 40x) en el caso del microscopio Olimpus cuenta con uno de 60x. Los primeros 3 objetivos se utilizan para clasificar y observar propiedades, el objetivo de 40x es usado para observar granos muy pequeños, observar la línea de becke o determinar signos ópticos con el lente de Bertrand.&nbsp;</li><li><strong>Platina giratoria: </strong>Superficie circular donde se coloca la sección o lámina delgada, gira libremente graduada desde 0-360° y un goniómetro para medidas angulares. Algunas veces se le coloca un carro para el barrido de conteo de puntos.</li><li><strong>Condensador:</strong>&nbsp;Dividido en 2 condensadores uno fijo y otro removible a voluntad del usuario. El fijo concentra la luz en la muestra y el removible genera que la luz forme un haz cónico (luz conoscopica) se usa para reforzar la luz o para determinar signos ópticos con el lente de Bertrand.</li><li><strong>Diafragma:</strong>&nbsp;Sirve para controlar la cantidad de luz variando el diámetro del haz, al cerrarlo genera mayor contraste.</li><li><strong>Lente desplegable:</strong> También llamado filtro azul que corrige la intensa luz amarilla de la lámpara.</li><li><strong>Polarizador: </strong>La dirección en que se coloca el lente está orientada E-W siempre estará interpuesto en el camino de la luz.</li><li><strong>Tornillos de centrado: </strong>Sirven para ajustar el microscopio cuando el diafragma o algún componente inferior está mal ajustado.</li><li><strong>Diafragma de campo: </strong>Permite controlar la cantidad de luz que llega a los compensadores.</li><li><strong>Mando de intensidad de la luz:</strong> Ajusta la cantidad de luz emitida por el microscopio.</li><li><strong>Ajuste Grueso y delgado:</strong> Sirven para controlar el enfoque de los objetivos subiendo y bajando la platina. El grueso es las veloz y el delgado más preciso.</li></ul><div><br></div>]]></description>
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         <pubDate>2022-04-18 18:31:25 UTC</pubDate>
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      <item>
         <title>Errores comunes y como reajustar el microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2147449860</link>
         <description><![CDATA[<div>Es común que el microscopio se desajuste o se cometan errores de uso, es por ello que acá se explicarán la mayoría de ellos que como petrografos podemos realizar para reajustar el microscopio.</div><ol><li><strong>Intensidad de la luz: </strong>Siempre es mejor trabajarla al máximo porque las propiedades de los minerales pueden cambiar. El filtro azul y el diafragma pueden ayudar a los ojos fotosensibles y solucionar estos problemas.&nbsp;</li><li><strong>Desajuste del diafragma:</strong> Cuando vemos que la sección delgada está oculta parcial o totalmente por un haz oscuro o negro posiblemente sea por esto. Los dos tornillos debajo del diafragma se pueden mover para centrarlo. Primero debemos cerrarlo por completo para que el haz de luz quedé lo más pequeño posible, con los tornillos lo centraremos hasta que quede en medio de la retícula que tiene uno de los binoculares.</li><li><strong>Analizador:</strong> Muchas veces las propiedades ópticas en Nicoles cruzados se ven afectadas por un mal ajuste del analizador. Para ellos debemos quitar cualquier sección delgada que se esté observando y con el tornillo del analizador presionar y girar al mismo tiempo hasta que se oscurezca lo mayor posible. Luego apretar el tornillo.</li><li><strong>Compensadores colocados: </strong>Otro error común es ver haz de luces fuccias, azules o amarillas intensas parcial o totalmente en la sección delgada. Esto puede ser debido a que el compensador tiene colocado Landa o 6landa.</li><li><strong>Binoculares funcionales:</strong> si ves desenfocado por uno de los binoculares, revisa el apartado de cómo se ajustan correctamente. A veces es molesto pasar horas en el microscopio con este problema, recuerda que el ajuste es personal puesto que no todos los ojos tienen la misma capacidad visual. Acomodalo a tus necesidades.</li><li><strong>La platina no sube:</strong> ¡CUIDADO! Este error es común y es imposible de arreglar por nosotros mismos, es necesario de una herramienta, es común romper los ajustes grueso y delgado por intentar arreglarlo.</li><li><strong>Objetivos mal cuadrados:</strong> Cuando se gira la platina y el mineral centrado en la retícula se mueve y se sale de la zona de observación parcial o completamente, lamentablemente no hay corrección para esto. Debe ser el laboratorista quien lo solucione, avisale. Recuerda siempre mover el revólver desde la zona dentada nunca desde los objetivos porque se descuadran.</li><li><strong>No mover ningún otro tornillo</strong> que no sea el de la platina, del diafragma o del analizador.</li><li><strong>No prender la luz reflejada</strong>, se puede quemar el bombillo y realmente no les servirá para nada.</li><li><strong>No se ve nada y todo lo anterior está bien:</strong> puede ser porque el revólver de los objetivos no se ajustó correctamente.</li></ol><div>Si ninguno de estos tips te ayudo para realizar una correcta interpretación, entonces procede a notificarlo en la planilla, jefe de laboratorio, monitor o profesora. Posiblemente se deba mandar a revisión.<br><br>OTROS TIPS:</div><ol><li>No apagues el microscopio si no bajaste la intensidad de la luz al mínimo.</li><li>No coloques secciones delgadas en la mesa, utiliza la parte posterior del microscopio o sobre el regulador de energía para luz reflejada.</li></ol>]]></description>
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         <pubDate>2022-04-18 19:30:03 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2147477205</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-04-18 19:54:32 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2147479943</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-04-18 19:56:55 UTC</pubDate>
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      <item>
         <title>Ejemplo de pregunta:</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2147489382</link>
         <description><![CDATA[<div>No logro diferenciar los minerales en la fotografía. Nicoles Cruzados 10x<br><br></div>]]></description>
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         <pubDate>2022-04-18 20:04:24 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2147491096</link>
         <description><![CDATA[<div>Nicoles Paralelos 10x</div>]]></description>
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         <pubDate>2022-04-18 20:06:10 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2147497545</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-04-18 20:12:29 UTC</pubDate>
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      <item>
         <title>Preguntas</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2165738266</link>
         <description><![CDATA[<div>A continuación deja tus preguntas:</div>]]></description>
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         <pubDate>2022-05-01 11:58:36 UTC</pubDate>
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         <title>Sistemas cristalinos</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2165742792</link>
         <description><![CDATA[<pre>https://ocw.uniovi.es/pluginfile.php/1983/mod_resource/content/32/1C_C11812_A_1011/cristalografia/indicecapitulos.htm</pre>]]></description>
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         <pubDate>2022-05-01 12:10:26 UTC</pubDate>
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         <title>Maclas</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2165743099</link>
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         <pubDate>2022-05-01 12:11:11 UTC</pubDate>
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         <title>Cómo funciona: explicación resumida</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2169418426</link>
         <description><![CDATA[<div>La luz trasmitida por la fuente de luz del microscopio viaja en todas las direcciones posibles. Cuando entra en contacto con el Polarizador los rayos se orientan paralelos a la dirección (normalmente E-W). Al transmitirse en la sección delgada algunos de los minerales generarán un rayo adicional más lento que estará perpendicular al otro y estás velocidades variarán por la dirección de propagación en la muestra (también son llamados frentes de onda ordinarios y extraordinarios). De no estar presente el analizador, lo que se vería por los binoculares serían las propiedades a luz natural de todos los minerales menos los "Opacos", que suelen ser los óxidos, sulfuros y metales; los cuales para ver sus propiedades se necesita de la luz reflejada. Si el analizador interfiere con la trayectoria de los rayos las propiedades de los minerales "Anisotropicos" (uniaxicos y biaxicos) serán apreciables pero las de los "Isotópicos" no (minerales de sistema cúbico, vidrio volcánico, entre otros) o los Anisotropicos que estén cortados paralelos a su eje óptico actuando como Isotópicos porque solo se transmitirá un rayo y no dos.<br><br>Básicamente con el Polarizador y el Analizador podemos reordenar los rayos refractarios del los minerales con el fin de apreciar las propiedades ópticas.</div>]]></description>
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         <pubDate>2022-05-04 05:30:23 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2170221488</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-04 16:28:57 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2170223385</link>
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         <pubDate>2022-05-04 16:30:08 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
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         <pubDate>2022-05-04 16:32:41 UTC</pubDate>
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         <title>Índice de refracción, Línea de Beck</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2171306036</link>
         <description><![CDATA[<div><br><strong>Índice de refracción</strong><br>El índice de refracción (n) de un medio se define como el valor de la velocidad de la luz en el vacío (c) dividido entre la velocidad de transmisión de la luz en ese medio (V). <br><br>n = c / Vmedio<br><br>Cuanto mayor sea el índice de refracción de un medio menor será la velocidad de la luz al atravesarlo. Los valores más comunes, de índices de refracción en los minerales, están entre 1.5 y 2.0.<br><br><strong>Línea de Becke</strong><br>"La línea de Becke nos permite comparar los índices de refracción de dos minerales en contacto. Esta línea que se produce por acumulación de luz, al desenfocar la muestra por encima del mineral (al alejar el objetivo de la lámina), y se desplazará hacia el grano de mayor índice de refracción" (ehu.eus)</div>]]></description>
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         <pubDate>2022-05-05 12:10:17 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
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         <pubDate>2022-05-05 12:10:57 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2171315008</link>
         <description><![CDATA[<div>Índice positivo<br>Relieve Muy Alto</div>]]></description>
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         <pubDate>2022-05-05 12:17:32 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2171319566</link>
         <description><![CDATA[<div>Índice positivo<br>Relieve Medio</div>]]></description>
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         <pubDate>2022-05-05 12:20:17 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2171321869</link>
         <description><![CDATA[<div>Índice positivo<br>Relieve Muy Alto</div>]]></description>
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         <pubDate>2022-05-05 12:22:05 UTC</pubDate>
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         <title>Ejercicios de la línea de Becke</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2171328445</link>
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         <pubDate>2022-05-05 12:27:08 UTC</pubDate>
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      <item>
         <title>Relieve</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183050672</link>
         <description><![CDATA[<div>El relieve es una propiedad óptica que únicamente es visible en Nicoles Paralelos // está propiedad sirve para diferenciar variedad de minerales ya que puede ser propiedad diagnóstica de varios de ellos.<br><br><br>"Aunque en la mayor parte de los casos el relieve es directamente proporcional al índice de refracción, podemos tener relieves negativos, bajos o moderados, en el caso de minerales con índices de refracción muy bajos.</div><div>En casos excepcionales (carbonatos) se da un pleocroísmo de relieve, o lo que es lo mismo, un cambio en el relieve al girar la muestra" http://www.ehu.eus/mineralogiaoptica/indice-de-refraccion-y-relieve.html</div>]]></description>
         <enclosure url="" />
         <pubDate>2022-05-13 15:21:30 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183050672</guid>
      </item>
      <item>
         <title>Ejemplo de tipos de Relieve</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183063391</link>
         <description><![CDATA[<div>Relieve Alto: Olivino<br>Relieve Medio: Piroxeno<br>Relieve Bajo: Serpentina (Olivino alterado)<br><br></div>]]></description>
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         <pubDate>2022-05-13 15:30:28 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183063391</guid>
      </item>
      <item>
         <title>Ejemplo tipos de Relieve</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183068076</link>
         <description><![CDATA[<div>Relieve Muy Bajo - Bajo: Cuarzo<br>Relieve Muy Alto: Zircón<br><br></div>]]></description>
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         <pubDate>2022-05-13 15:33:25 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183068076</guid>
      </item>
      <item>
         <title>Turmalina (Na,Ca,K)(Mg,Fe,Mn,Lo,Al)3(Al,De,Cr,V)6Si6O18(BO3)3(O,OH,F)4</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183080435</link>
         <description><![CDATA[<ul><li>ACCESORIO SEDIMENTARIO-ÍGNEO-METAMÓRFICO</li></ul><div>CICLOSILICATO<br>La Turmalina es un mineral que presenta alto preocroismo (propiedad diagnóstica), puede presentar muchos colores naturales por lo que no es una propiedad fiable. Su pleocroismo se repite cada 180° siendo máximo en el sentido E-W.<br><br>Como propiedad diagnóstica en Nicoles Cruzados X, los colores de interferencia serán de 4to-5to orden.<br><br>Para la variedad de Choclo, por el componente de Hierro presenta colores naranjas, rojizos y oscuros por lo que el preocroismo y propiedades en Nicoles Cruzados se alteran.<br><br>ASOCIACIÓN: Pegmatitas graníticas, rocas ígneas ácidas (granitos y aplitas) y metamórficas (esquistos y gneises). Puede encontrarse en rocas sedimentarias como mineral detrítico<br><br></div><pre>http://www.alexstrekeisen.it/pluto/tormalina.php</pre>]]></description>
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         <pubDate>2022-05-13 15:41:26 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183080435</guid>
      </item>
      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183084191</link>
         <description><![CDATA[<div>Turmalina 4x N//</div>]]></description>
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         <pubDate>2022-05-13 15:44:02 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183084191</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183085358</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 15:44:46 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183085358</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183091598</link>
         <description><![CDATA[<div>Pleocroismo de la Turmalina, un cristal con pleocroismo muy marcado y otro cristal con el preocroismo casi imperceptible (corte basal).&nbsp;<br><br>*Corte basal: cuando el mineral se encuentra cortado en la sección delgada por su eje óptico, por lo que el pleocroismo, la extinción, la exfoliación no se verán claramente.</div>]]></description>
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         <pubDate>2022-05-13 15:48:53 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183091598</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183109484</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 16:01:37 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183109484</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183110318</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 16:02:14 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183110318</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183111544</link>
         <description><![CDATA[<div>Pleocroismo muy marcado.</div>]]></description>
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         <pubDate>2022-05-13 16:03:06 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183111544</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183114598</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 16:05:25 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183114598</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183115394</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 16:05:58 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183115394</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183117577</link>
         <description><![CDATA[<div>Extinción colores de interferencia de 4to y 5to orden.</div>]]></description>
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         <pubDate>2022-05-13 16:07:36 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183117577</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183119631</link>
         <description><![CDATA[<div>Pleocroismo en corte basal. Casi imperceptible.</div>]]></description>
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         <pubDate>2022-05-13 16:09:01 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183119631</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183126433</link>
         <description><![CDATA[<div>Color Anómalo en cruzados<br><br>*Color Anómalo: cuando no presenta colores de interferencia claramente. Es un color sólido o sólidos que no varían cromática mente pero si tienen extinción.</div>]]></description>
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         <pubDate>2022-05-13 16:14:16 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183126433</guid>
      </item>
      <item>
         <title>Zircón ZrSiO4</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183131200</link>
         <description><![CDATA[<ul><li>ACCESORIO ÍGNEO, SEDIMENTARIO Y METAMÓRFICO</li></ul><div>NESOSILICATO<br>El Zircón es usado para datar rocas porque no se antera con facilidad y resiste al transporte y la erosión. Por lo que generalmente será encontrado en areniscas y además como granos pequeños redondeados prescisamente por el transporte.<br><br>Presenta un relieve Muy Alto (propiedad diagnóstica)<br>En Nicoles Cruzados presenta colores de interferencia de 3ro-4to orden.<br><br>ASOCIACIÓN: Accesorio en todo tipo de rocas ígneas, más frecuente en granitos, granodioritas y sienitas. Calizas cristalinas, gneises y esquistos. En arenas como detrítico.<br><br></div><pre>http://www.alexstrekeisen.it/pluto/zircone.php</pre><div><br><br></div>]]></description>
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         <pubDate>2022-05-13 16:17:47 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183131200</guid>
      </item>
      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183133147</link>
         <description><![CDATA[<div>Relieve Muy Alto.</div>]]></description>
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         <pubDate>2022-05-13 16:19:18 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183133147</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183135089</link>
         <description><![CDATA[<div>Colores de interferencia 3ro-4to orden.</div>]]></description>
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         <pubDate>2022-05-13 16:20:26 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183135089</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183138997</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 16:23:19 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183138997</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183140948</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 16:24:44 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183140948</guid>
      </item>
      <item>
         <title>Siderita FeCO3</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183152209</link>
         <description><![CDATA[<ul><li>SEDIMENTARIO-METAMÓRFICO</li></ul><div>CARBONATO<br>La Siderita tiene casi las mismas propiedades de la Calcita, para diferenciarlas: tiene los bordes y entre la exfoliación o maclas óxido de hierro.<br><br>ASOCIACIÓN: En rocas sedimentarias, como lechos en series de margas (nódulos y septarias). Como ganga en depósitos hidrotermales. Asociada a rocas metamórficas (Erzberg). Se pueden formar masas importantes por reemplazamiento de calizas</div>]]></description>
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         <pubDate>2022-05-13 16:33:13 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183152209</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183173084</link>
         <description><![CDATA[<div>Siderita bien cristalizada. (Cristales grandes)</div>]]></description>
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         <pubDate>2022-05-13 16:49:01 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183173084</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183173898</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 16:49:41 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183173898</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183175024</link>
         <description><![CDATA[<div>Siderita poco a mal cristalizada. (Cristales muy pequeños).<br>*Los componentes redondos son Oolitos de minerales de óxidos de Hierro.</div>]]></description>
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         <pubDate>2022-05-13 16:50:36 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183175024</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183178217</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 16:53:09 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183178217</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183179424</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 16:54:03 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183179424</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183180478</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 16:54:55 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183180478</guid>
      </item>
      <item>
         <title>Olivino (Mg,Fe)2SiO4 (Fe,Mg)2SiO4</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183186015</link>
         <description><![CDATA[<ul><li>ÍGNEO-RARO METAMÓRFICO</li></ul><div>NESOSILICATO<br>El Olivino es un grupo de minerales son parte de los más importantes de las rocas ígneas, específicamente de las rocas básicas y ultrabasicas extrusivas y su igualdad volcánica. Es parte de la serie de cristalización de Bowen.<br><br>Su alto relieve, fractura (muy alterable y frágil) y alto relieve son las propiedades ópticas diagnósticas para este grupo de minerales.<br><br>ASOCIACIÓN: Rocas ígneas ferromagnesianas básicas y ultrabásicas, (gabro, peridotita y basalto) en las que su proporción varía desde accesorio hasta componente mayoritario (dunitas). También en calizas metamorfizadas.&nbsp;<br><br>***Incompatible con el Cuarzo.<br>***Muy fácil de confundir con el Clinopiroxeno.<br><br></div><pre>http://www.alexstrekeisen.it/pluto/olivina.php</pre><div><br></div>]]></description>
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         <pubDate>2022-05-13 16:59:21 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183186015</guid>
      </item>
      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183193184</link>
         <description><![CDATA[<div>Olivino (relieve Alto) con serpentina (relieve bajo) y piroxeno (relieve Medio) 10x N//</div>]]></description>
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         <pubDate>2022-05-13 17:05:20 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183194075</link>
         <description><![CDATA[<div>Olivino con piroxeno y serpentina 10x NX</div>]]></description>
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         <pubDate>2022-05-13 17:06:03 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183194075</guid>
      </item>
      <item>
         <title>Epidota Ca2FeAl2(Si2O7)(SiO4)O(OH)</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183205750</link>
         <description><![CDATA[<ul><li>METAMÓRFICO-ALTERACIÓN ÍGNEO</li></ul><div>SOROSILICATO<br>La Epidota es un mineral con pleocroismo y color verde amarillento a incoloro (propiedad diagnóstica) en cruzados presenta colores de interferencia de 2do a 3er orden y en agrupaciones de cristales pequeños. Es un mineral que altera otros minerales.<br><br>**Se puede confundir con la glauconita (glaucofana es diferente) porque presenta similar color en paralelos, se diferencian porque en cruzados la glauconita tiene el mismo color Anómalo que en paralelos y porque se presenta en formas redondeadas grandes.<br><br>ASOCIACIÓN: Metamorfismo regional en facies anfibolita-epidota. Calizas metamórficas con granates, diópsido, anfíboles. En rocas ígneas puede ser un mineral accesorio, o formarse como producto de de alteración hidrotermal (en venas o cavidades). También en la fracción pesada de rocas sedimentarias.<br><br></div><pre>http://www.alexstrekeisen.it/pluto/saussurite.php</pre><div><br><br></div>]]></description>
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         <pubDate>2022-05-13 17:15:16 UTC</pubDate>
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      </item>
      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183207480</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 17:16:35 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183210014</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 17:18:25 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183210014</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183210890</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 17:19:05 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183212119</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 17:20:03 UTC</pubDate>
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      </item>
      <item>
         <title>Titanita (Ca,Na)(Ti,Ta,Al,Nb,Sb)SiO3(O,F)</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183214581</link>
         <description><![CDATA[<ul><li>ÍGNEO-METAMÓRFICO</li></ul><div>NESOSILICATO<br>Su propiedad diagnóstica es el alto relieve, su color natural marrón y porque suele ser euhedral romboidal.<br>ASOCIACIÓN: Accesorio común en granitos, dioritas sienitas y sienitas nefelínicas, también en rocas metamórficas (gneises, esquistos, anfibolitas y calizas metamórficas)<br><br></div><pre>http://www.alexstrekeisen.it/pluto/titanite.php</pre><div>&nbsp;</div>]]></description>
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         <pubDate>2022-05-13 17:22:02 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183214581</guid>
      </item>
      <item>
         <title>Piroxeno</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183313180</link>
         <description><![CDATA[<ul><li>ÍGNEO- RARO METAMÓRFICO</li></ul><div>INOSILICATO/PIROXENO<br>Es un grupo de minerales importante de las rocas ígneas, hacer parte de la serie de cristalización de Bowen. Presente de intermedias a ultrabasicas en extrusivas y igualmente en volcánicas<br><br>**Fácil de confundir con el Olivino, se diferencian porque el clinopiroxeno tiene relieve Medio y presenta exfoliación, en algunos casos tiene color natural más grisáceo y el olivino es incoloro.<br><br>Los clinopiroxenos cristalizan en sistema monoclínico (como la augita, el diópsido y la espodumena).<br><br><strong>ASOCIACIÓN: </strong>Accesorio común en granitos, dioritas sienitas y sienitas nefelínicas, también en rocas metamórficas (gneises, esquistos, anfibolitas y calizas metamórficas)<br><br></div><pre>http://www.alexstrekeisen.it/pluto/clinopirosseni.php

http://www.alexstrekeisen.it/pluto/uralite.php</pre><div>&nbsp;</div>]]></description>
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         <pubDate>2022-05-13 18:42:38 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183313180</guid>
      </item>
      <item>
         <title>Diopsido</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183317963</link>
         <description><![CDATA[<div>**Se retomará en un apartado individual<br><br>ASOCIACIÓN: Normalmente en rocas metamórficas ricas en calcio, mármoles impuros, skarns o rocas de metamorfismo de contacto o regional. El diópsido de cromo es más raro y puede encontrarse en rocas ultrabásicas.</div>]]></description>
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         <pubDate>2022-05-13 18:47:05 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183317963</guid>
      </item>
      <item>
         <title>Augita</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183320097</link>
         <description><![CDATA[<div>Puede presentar colores de 1er orden simulando ser Ortopiroxeno, pero si presenta colores de 2do orden al girar la platina también es Augita.<br><br><strong>SOCIACIÓN: </strong>Mineral ferromagnesiano importante muy frecuente, sobre todo en rocas básicas e intermedias: volcánicas como andesitas, basaltos, ígneas como gabros, ofitas, doleritas, algunas granodioritas y rocas ultrabásicas.</div><div>&nbsp;</div>]]></description>
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         <pubDate>2022-05-13 18:49:06 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183320097</guid>
      </item>
      <item>
         <title>Enstatita</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183386933</link>
         <description><![CDATA[<div><strong>ASOCIACIÓN: </strong>Enstatita: rocas ígneas básicas como peridotitas, gabros, piroxenitas, noritas y basaltos. En meteoritos.</div><div>Ferrosilita: rocas ígneas básicas, gabros, noritas. En granitos tipo charnokítico. En lavas andesíticas.</div><div>Los ortopiroxenos también pueden darse en rocas metamórficas de alta presión y temperatura (granulitas), o en rocas con metamorfismo de contacto de muy alta temperatura</div>]]></description>
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         <pubDate>2022-05-13 20:01:43 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183386933</guid>
      </item>
      <item>
         <title>Egirina</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183389180</link>
         <description><![CDATA[<div><strong>ASOCIACIÓN: </strong>Rocas ricas en Na y pobres en sílice como fonolitas y sienitas nefelínicas</div><div>&nbsp;</div>]]></description>
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         <pubDate>2022-05-13 20:04:32 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183389180</guid>
      </item>
      <item>
         <title>Onfacita</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183389972</link>
         <description><![CDATA[<div>**Se retomará en un apartado individual<br><br><strong>ASOCIACIÓN: </strong>En rocas de alta presión como eclogitas y rocas relacionadas.</div>]]></description>
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         <pubDate>2022-05-13 20:05:39 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183389972</guid>
      </item>
      <item>
         <title>Jadeita</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183391355</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 20:07:36 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183391355</guid>
      </item>
      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183394365</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 20:11:38 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183395013</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 20:12:36 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183396820</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 20:14:55 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183397311</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 20:15:34 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183416936</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 20:43:07 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183419594</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 20:47:04 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183419594</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183420171</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 20:47:48 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183420171</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183423385</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 20:52:28 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183423385</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183423627</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 20:52:47 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183423627</guid>
      </item>
      <item>
         <title>Piroxeno</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183434101</link>
         <description><![CDATA[<ul><li>ÍGNEO- RARO METAMÓRFICO</li></ul><div>INOSILICATO/PIROXENO<br>Es un grupo de minerales importante de las rocas ígneas, hacer parte de la serie de cristalización de Bowen. Presente de intermedias a ultrabasicas en extrusivas y igualmente en volcánicas<br><br>**Fácil de confundir con el Olivino, se diferencian porque el ortpiroxeno tiene relieve Medio, presenta exfoliación y en cruzados tiene colores de primero orden.<br><br>Los ortopiroxenos son de sistema ortorrómbico (como la broncita, la enstatita y la hiperstena).<br><br><strong>ASOCIACIÓN: </strong>Accesorio común en granitos, dioritas sienitas y sienitas nefelínicas, también en rocas metamórficas (gneises, esquistos, anfibolitas y calizas metamórficas)</div><div>&nbsp;</div>]]></description>
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         <pubDate>2022-05-13 21:07:59 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183434101</guid>
      </item>
      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183435796</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 21:10:37 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183437067</link>
         <description><![CDATA[<div>Nicoles Cruzados 4x Fotografía tomada en el laboratorio de petrografia de la UPTC</div>]]></description>
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         <pubDate>2022-05-13 21:12:25 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183439472</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 21:16:00 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183439472</guid>
      </item>
      <item>
         <title>Enstatita</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183444007</link>
         <description><![CDATA[<div><strong>ASOCIACIÓN: </strong>Enstatita: rocas ígneas básicas como peridotitas, gabros, piroxenitas, noritas y basaltos. En meteoritos.</div><div>Ferrosilita: rocas ígneas básicas, gabros, noritas. En granitos tipo charnokítico. En lavas andesíticas.</div><div>Los ortopiroxenos también pueden darse en rocas metamórficas de alta presión y temperatura (granulitas), o en rocas con metamorfismo de contacto de muy alta temperatura</div>]]></description>
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         <pubDate>2022-05-13 21:23:43 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183444007</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183444756</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 21:25:01 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183444756</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183445055</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 21:25:32 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183445055</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183447764</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 21:30:13 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183447764</guid>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183448614</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 21:31:52 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183448614</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183450159</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 21:34:42 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183450159</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183450305</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-05-13 21:35:00 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183450305</guid>
      </item>
      <item>
         <title>Nicoles Paralelos</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183458419</link>
         <description><![CDATA[<div>En los Nicoles Paralelos podemos analizar las siguientes propiedades ópticas, recordando que este Nicole es sin la presencia del polarizador superior o analizador.<br><br><strong>•Relieve:</strong> Línea de Beck y Índice de refracción.</div><ol><li>Muy alto.</li><li>Alto.</li><li>Medio.</li><li>Bajo.</li><li>Muy bajo.</li></ol><pre>https://www.ehu.eus/mineralogiaoptica/indice-de-refraccion-y-relieve.html</pre><div><br><br></div><div><strong>•Cilvaje:</strong> Exfoliación y fractura.</div><pre>https://www.ehu.eus/mineralogiaoptica/exfoliaciones-y-fracturas.html</pre><div><br><strong>•Color natural:</strong> Todos los colores incluyendo incoloro.<br><br><strong>•Pleocroismo:</strong> Cuando presenta cambios en la intensidad del color, propia pero no siempre presente en los minerales coloreados.</div><pre>https://www.ehu.eus/mineralogiaoptica/color-y-pleocroismo.html</pre><div><br><strong>•Hábito y forma:</strong> Si el mineral presenta alto relieve, alteración o clivaje es posible ver el hábito y la forma. Para profundizar en el tema en archivos generales el tercer, noveno y décimo archivo.<br><br></div><pre>https://www.ehu.eus/mineralogiaoptica/forma-y-habito.html</pre>]]></description>
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         <pubDate>2022-05-13 21:48:40 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2183458419</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215527653</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-06-08 23:24:33 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215527653</guid>
      </item>
      <item>
         <title>Nicoles Cruzados</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215538983</link>
         <description><![CDATA[<div>En los Nicoles Cruzados podemos analizar las siguientes propiedades ópticas, recordando que este Nicole es CON la presencia del polarizador superior o analizador.<br><br></div><pre>https://www.ehu.eus/mineralogiaoptica/isotropia-y-anisotropia-optica-indicatrices.html</pre><div><br><strong>•Extinción:</strong> Cambiará según el corte óptico que se le haga al mineral al momento de realizar la sección delgada.</div><ol><li>Recta o paralela.</li><li>Inclinada u Oblicua.</li><li>Moteada.</li><li>Ondulante.</li><li>Basculante.</li><li>Simétrica.</li></ol><pre>https://www.ehu.eus/mineralogiaoptica/angulo-de-extincion-y-elongacion.html</pre><div><br></div><div><strong>•Color de interferencia y Birrefrigencia:</strong> Los órdenes de color a los que corresponden los minerales, algunos pueden presentar color Anómalo.</div><ul><li>El color de interferencia se produce cuando el retardo introducido en las ondas del cristal es igual a un número entero de longitudes de onda de su color complementario.&nbsp;</li></ul><pre>https://www.ehu.eus/mineralogiaoptica/fenomenos-de-interferencia-y-birrefringencia.html</pre><div><br></div><div><strong>•Macla:</strong> La cristalización del mismo mineral regida por los ejes, centro o planos.<br>Para profundizar en el tema:<br>En el apartado de archivos generales, quinto archivo.</div><ol><li>Polisintetica (Albita).</li><li>Carlsbad.</li><li>Carlsbad-Albita.</li><li>Multidireccional.</li><li>Cíclica.</li><li>Penetración.</li><li>Enrejada.</li><li>Periclina.</li><li>Lamelar.</li><li>Simple.</li></ol><pre>https://www.ehu.eus/mineralogiaoptica/maclas.html</pre><div><br><strong>•Hábito y forma:</strong> Para profundizar en el tema en archivos generales el tercer, noveno y décimo archivo.</div><ol><li>Euhedral: las caras bien cristalizadas.</li><li>Subhedral: Algunas caras bien cristalizadas.</li><li>Anhedral: Ninguna cara bien cristalizada.</li></ol><pre>https://www.ehu.eus/mineralogiaoptica/forma-y-habito.html</pre><div><br><strong>•Signo óptico:</strong> Con ayuda del lente de Bertrand se puede determinar si el mineral Anisotropico es Uniaxico o Biaxico.</div><pre>https://www.ehu.eus/mineralogiaoptica/signos-opticos.html</pre><div><br><strong>•Incrustaciones, zonaciones, alteraciones:</strong><br>Particularidades que presentan los minerales.</div><pre>https://www.ehu.eus/mineralogiaoptica/otros-exsoluciones-zonaciones-inclusiones-...html</pre>]]></description>
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         <pubDate>2022-06-08 23:40:53 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215538983</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215656023</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-06-09 01:49:38 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215656023</guid>
      </item>
      <item>
         <title>Minerales Isótropicos</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215660798</link>
         <description><![CDATA[<div>Todas las sustancias transparentes pueden dividirse en dos grupos: isótropos&nbsp; y anisótropos. Todos los minerales excepto aquellos que pertenecen al sistema cubico son anisotrópicos (aunque algunos minerales anisotrópicos pueden en la práctica parecen ser isotrópicos si son cortados perpendicular a su eje óptico [eje C]).<br><br></div><div><br>Los minerales cúbicos no polarizan la luz que pasa a través de ellos y no varían direccionalmente en su efecto sobre la luz. Los minerales cúbicos son por lo tanto llamados isotrópicos. El vidrio y las sustancias amorfas son llamadas también isotrópicas. En estas substancias la luz se mueve en todas direcciones con la misma velocidad,&nbsp; y cada sustancia isótropa tiene un solo índice de refracción.<br><br></div><div><br>La isotropía refleja directamente el alto grado de regularidad en la estructura atómica de los minerales cúbicos. En las sustancias anisotrópicas, que comprenden todos los cristales, excepto los del sistema isométrico, la velocidad de la luz varía con la dirección cristalográfica y por lo tanto existe un intervalo de índices de refracción.<br><br></div><div><strong>&nbsp;<br>Texto extraído de:&nbsp;</strong></div><pre>https://www.sgm.gob.mx/Web/MuseoVirtual/Minerales/Mineralogia-optica.html</pre>]]></description>
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         <pubDate>2022-06-09 01:54:39 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215660798</guid>
      </item>
      <item>
         <title>Lista de minerales Isótropicos</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215665427</link>
         <description><![CDATA[<div>Minerales del sistema cúbico que no pertenecen al grupo químico de los metales, sulfuros o óxidos.<br><br><strong>Minerales</strong><br>Halita<br>Fluorita<br>Sodalita<br>Granate<br><br><strong>Mineraloides</strong><br>Leucita<br>Ópalo inorgánico<br><br><strong>Sustancias amorfas<br></strong>Colofana<br>Vidrio volcánico<br>Vidrio volcánico opalizado<br>Ópalo orgánico</div>]]></description>
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         <pubDate>2022-06-09 01:59:24 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215665427</guid>
      </item>
      <item>
         <title>Granate ((Fe,Mg,Mn,Ca)3(Al,Cr,Fe)2(SiO4)3)</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215668036</link>
         <description><![CDATA[<ul><li>METAMÓRFICO- RARO ÍGNEO</li></ul><div>NESOSILICATO</div><div>El granate es un mineral Isótropico que presenta alto relieve (propiedad óptica diagnóstica), normalmente se reconoce por ser esférico por pertenecer al sistema cristalino cúbico.<br><br>ASOCIACIÓN: Muy extendido. Rocas metamórficas (esquistos y gneises, eclogitas, skarns), como accesorio en rocas ígneas (pegmatitas y más raro en granitos)<br><br></div><pre>http://www.alexstrekeisen.it/pluto/granati.php</pre>]]></description>
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         <pubDate>2022-06-09 02:01:59 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215668036</guid>
      </item>
      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215673703</link>
         <description><![CDATA[<div>Trozos de Granate (se diferencian porque en el espacio bien formado euedral el relieve es más alto. Lo de relieve Bajo es vacío de la sección delgada) 4x Nicoles Paralelos.</div>]]></description>
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         <pubDate>2022-06-09 02:07:52 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215673703</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215675145</link>
         <description><![CDATA[<div>Granate 4x Nicoles Cruzados. Se ve más negro que el vacío de la sección delgada.</div>]]></description>
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         <pubDate>2022-06-09 02:09:13 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215675145</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215677270</link>
         <description><![CDATA[<div>Trozos de Granates euhedrales con la misma descripción que el ejemplo anterior. 4x N//<br><br>**N//: Nicoles Paralelos<br>**NX: Nicoles Cruzados</div>]]></description>
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         <pubDate>2022-06-09 02:11:12 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215677270</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215678085</link>
         <description><![CDATA[<div>Granates 4x NX</div>]]></description>
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         <pubDate>2022-06-09 02:12:00 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215678085</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215679102</link>
         <description><![CDATA[<div>Espacio vacío que aparenta ser un Granate. 4x N//</div>]]></description>
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         <pubDate>2022-06-09 02:13:04 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215679102</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215680282</link>
         <description><![CDATA[<div>Vacío que aparenta ser un Granate. 4x NX</div>]]></description>
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         <pubDate>2022-06-09 02:14:05 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215680282</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215681267</link>
         <description><![CDATA[<div>Granate en esquisto N//</div>]]></description>
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         <pubDate>2022-06-09 02:14:59 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215681267</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215682056</link>
         <description><![CDATA[<div>Granate en esquisto NX</div>]]></description>
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         <pubDate>2022-06-09 02:15:38 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215682056</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215682704</link>
         <description><![CDATA[<div>Granate en eclogita N//</div>]]></description>
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         <pubDate>2022-06-09 02:16:14 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215682704</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215683171</link>
         <description><![CDATA[<div>Granate en eclogita NX</div>]]></description>
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         <pubDate>2022-06-09 02:16:39 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215683171</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215685602</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-06-09 02:18:51 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215685602</guid>
      </item>
      <item>
         <title>Leucita (KAlSi2O6)</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215687882</link>
         <description><![CDATA[<ul><li>ÍGNEO</li></ul><div>TECTOSILICATO/FELDESPATÓIDE<br>La Leucita es un mineraloide perteneciente de los feldespatoides. Aunque es un Isótropico en cruzados preventa una macla multidireccional haciendo que está sea su propiedad diagnóstica.<br><br>ASOCIACIÓN: Rocas volcánicas básicas deficitarias en sílice y ricas en potasio (basanitas, tefritas, fonolitas y leucititas)<br><br></div><pre>http://www.alexstrekeisen.it/pluto/leucite.php</pre>]]></description>
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         <pubDate>2022-06-09 02:20:55 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215687882</guid>
      </item>
      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215690885</link>
         <description><![CDATA[<div>Leucita 4x N//</div>]]></description>
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         <pubDate>2022-06-09 02:23:43 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215690885</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215691519</link>
         <description><![CDATA[<div>Leucita 4x NX</div>]]></description>
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         <pubDate>2022-06-09 02:24:20 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215691519</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215692418</link>
         <description><![CDATA[<div>Maclas características de la Leucita 10x NX</div>]]></description>
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         <pubDate>2022-06-09 02:25:11 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215692418</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215693010</link>
         <description><![CDATA[<div>Leucita 10x N//</div>]]></description>
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         <pubDate>2022-06-09 02:25:45 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215693010</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215693963</link>
         <description><![CDATA[<div>Macla característica de la Leucita 10x NX</div>]]></description>
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         <pubDate>2022-06-09 02:26:42 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215693963</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215694522</link>
         <description><![CDATA[<div>Leucita en Leucitita N//</div>]]></description>
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         <pubDate>2022-06-09 02:27:17 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215695297</link>
         <description><![CDATA[<div>Leucita en Leucitita NX</div>]]></description>
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         <pubDate>2022-06-09 02:28:05 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215695297</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215696902</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-06-09 02:29:41 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215696902</guid>
      </item>
      <item>
         <title>Colofana</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215701968</link>
         <description><![CDATA[<ul><li>SEDIMENTARIO</li></ul><div>FOSFATO AMORFO<br>La colofana es una sustancia mal cristalizada del fluorapatito. Esta sustancia reemplaza los organismos después de depositarse cristalizando dentro de ellos. En el caso de cristalizar correctamente será fluorapatito.<br><br>Se identifica fácilmente por la presencia de Pellets que es la materia fecal de los organismos. Pueden ser similares a gusanos o esferas isotropicas.<br><br>Sus propiedades son muy diversas por ser amorfo, pero el color natural estará en un espectro amarillento y su relieve normalmente será bajo.</div>]]></description>
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         <pubDate>2022-06-09 02:34:33 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215701968</guid>
      </item>
      <item>
         <title>Muestra de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215703094</link>
         <description><![CDATA[<div>Colofana 4x N//</div>]]></description>
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         <pubDate>2022-06-09 02:35:36 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215703094</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215704400</link>
         <description><![CDATA[<div>Colofana 4x NX</div>]]></description>
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         <pubDate>2022-06-09 02:36:42 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215704400</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215707314</link>
         <description><![CDATA[<div>Colofana 4x N//</div>]]></description>
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         <pubDate>2022-06-09 02:39:24 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215707314</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215707954</link>
         <description><![CDATA[<div>Colofana 4x NX</div>]]></description>
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         <pubDate>2022-06-09 02:39:57 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215707954</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215709731</link>
         <description><![CDATA[<div>Colofana 4x N//</div>]]></description>
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         <pubDate>2022-06-09 02:41:30 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215709731</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215710417</link>
         <description><![CDATA[<div>Colofana 4x NX</div>]]></description>
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         <pubDate>2022-06-09 02:42:09 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215710417</guid>
      </item>
      <item>
         <title>Ópalo</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215715260</link>
         <description><![CDATA[<ul><li>SEDIMENTARIO-ÍGNEO</li></ul><div>SÍLICE AMORFO<br>El Ópalo es un mineraloide de silicato, pertenece al cuarzo. Este mineral puede cristalizar en vidrio volcánico llamado "vidrio volcánico opalizado" lo que originará ópalo inorgánico o cristalizar de forma orgánica en las diatomeas de la diatomita.<br><br>Para el caso del ópalo inorgánico, se verá similar a un vidrio volcánico.<br>Para el caso del ópalo orgánico, se verán tubos similares a tubos de silicona que pueden ser similares a la colofana por lo tanto se recomienda siempre ver la sección delgada en 4x para evitar confusiones.<br><br></div>]]></description>
         <enclosure url="" />
         <pubDate>2022-06-09 02:46:54 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215715260</guid>
      </item>
      <item>
         <title>Vidrio volcánico</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215721010</link>
         <description><![CDATA[<ul><li>ÍGNEO</li></ul><div>SÍLICE AMORFO<br>El vidrio volcánico es uno de los componentes más importantes para clasificar Rocas ígneas en particular para diferenciar las rocas Extrusivas de las rocas Intrusivas.&nbsp;<br><br>Presenta muchos colores por lo que no es una propiedad diagnóstica para diferenciarlo. Presenta normalmente relieve bajo a medio. Como es una sustancia no tiene tamaño por lo tanto se encontrará alrededor de los demás cristales similar a una sopa dónde el caldo será el vidrio volcánico y las verduras los minerales (propiedad diagnóstica).<br><br>Existen muchos tipos de vidrios donde los cristales pueden ser más grandes que otros. Algunos vidrios pueden tener componentes tan grandes ópticamente que se confunden con minerales pero que por no ser identificables macroscópicamente son considerados parte del vidrio volcánico.</div>]]></description>
         <enclosure url="" />
         <pubDate>2022-06-09 02:52:37 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215721010</guid>
      </item>
      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215725782</link>
         <description><![CDATA[<div>Vidrio volcánico fluidal color gris claro de relieve bajo-medio con cristales de relieve bajo igualmente. Se diferencian los cristales claramente por ser incoloros y euhedrales-subhedrales. 4x N//</div>]]></description>
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         <pubDate>2022-06-09 02:57:05 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215725782</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215728110</link>
         <description><![CDATA[<div>Vidrio volcánico con cristales tan pequeños que se integran y forman parte del vidrio por ser indiferenciales. Cristales euhedrales a subhedrales más grandes de plagioclasa y anortoclasa claramente diferenciados. 4x NX</div>]]></description>
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         <pubDate>2022-06-09 02:59:20 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215728110</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215728957</link>
         <description><![CDATA[<div>Vidrio volcánico fluidal sin cristales identificables. 4x N//</div>]]></description>
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         <pubDate>2022-06-09 03:00:10 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215728957</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215730051</link>
         <description><![CDATA[<div>Vidrio volcánico fluidal sin cristales identificables. 4x NX</div>]]></description>
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         <pubDate>2022-06-09 03:01:13 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215730051</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215731216</link>
         <description><![CDATA[<div>Vidrio volcánico color gris moderadamente oscuro con cristales de color rojo e incoloro con vesículas de aire. 4x N//</div>]]></description>
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         <pubDate>2022-06-09 03:02:24 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215731216</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215733478</link>
         <description><![CDATA[<div>Vidrio volcánico con cristales de color de interferencia rojo anómalo, cristales de color de interferencia de 1er orden alargados y anhedrales más grandes y cristales pequeños de 2do-3er orden. Las vesículas de aire se ven más claramente de color negro. 4x NX</div>]]></description>
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         <pubDate>2022-06-09 03:04:39 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215733478</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215734759</link>
         <description><![CDATA[<div>Vidrio volcánico de color café castaño oscuro con vesículas de aire muy grandes. Algunos cristales de minerales alargados y redondeados más pequeños. 4x N//</div>]]></description>
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         <pubDate>2022-06-09 03:06:00 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215734759</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215736286</link>
         <description><![CDATA[<div>Vidrio volcánico con cristales pequeños de 3er orden. Algunos alargados identificables como plagiocalsa de color de 1er orden. Y vesículas de color negro. 4x NX</div>]]></description>
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         <pubDate>2022-06-09 03:07:34 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215736286</guid>
      </item>
      <item>
         <title>Índice</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215781988</link>
         <description><![CDATA[<p>A continuación el índice de la página con los minerales vistos hasta la fecha.</p><p>Los minerales con un ✔️ tienen la información completa, 〰️ tienen la información parcialmente completa (se encontrarán en rojo) y ❌ los que aún no tienen información.</p><p><br/></p><p>1. Archivos generales🗂️.</p><p>2. Uso y partes del microscopio.</p><p>3. Ajustes del microscopio para evitar errores💣.</p><p>4. Nicoles Paralelos ⚪.</p><p>5. Índice de refracción, Línea de Beck y Relieve.</p><p>6. Nicoles Cruzados ⚫.</p><p>7. Lente de Bertrand y Signo óptico.🅱️</p><p>8. Desmezclas y anteraciones.</p><p>9. Macla, Hábito y Forma.</p><p>10. Propiedades ópticas de los minerales 💎.</p><p>11. Minerales Opacos ⚪❎/⚫❎</p><ul><li><p>Pirita. ❌</p></li><li><p>Limonita. ❌</p></li><li><p>Hematita. ❌</p></li><li><p>Gohetita. ❌</p></li><li><p>Magnetita. ❌</p></li></ul><p>12. Minerales y Amorfos Isotrópicos⚪✅/⚫❎.</p><p>12.1. Isotrópicos amorfos.</p><ul><li><p>Colofana.✔️</p></li><li><p>Ópalo orgánico-inorgánico.✔️</p></li><li><p>Vidrio volcánico.✔️</p></li></ul><p>12.2. Isotrópicos cristalinos.</p><ul><li><p>Halita.✔️</p></li><li><p>Fluorita.✔️</p></li><li><p>Granate.✔️</p></li></ul><p>12.2.3. Clasificación de Feldespatoides Isotrópicos.</p><ul><li><p>Leucita (Isotrópico).✔️</p></li><li><p>Sodalita (Isótrópico).✔️</p></li><li><p>Noseana (Isótrópico). ❌</p></li><li><p>Haüyna (Isótrópico). ❌</p></li></ul><p>13. Minerales Anisotrópicos⚪✅/⚫✅.</p><p>13.1 Clasificación de Feldespatoides Anisotrópicos.</p><ul><li><p>Nefelina (Anisotrópico). ❌</p></li><li><p>Escapolita (Anisotrópico). ❌</p></li><li><p>Zeolita (Anisotrópico). ❌</p></li></ul><p>13.2. Filosilicatos (Micas y min. arcillosos).</p><ul><li><p>Moscovita.✔️</p></li><li><p>Flogopita. ❌</p></li><li><p>Biotita.✔️</p></li><li><p>Clorita - Clinocloro y Chamosita. ✔️</p></li><li><p>Serpentina. ❌</p></li><li><p>Sericita/Caolinita. ❌</p></li><li><p>Talco.</p></li></ul><p>13.3. Anfíboles.</p><ul><li><p>Hornblenda.✔️</p></li><li><p>Lamprobolita.✔️</p></li><li><p>Actinolita.❌</p></li><li><p>Tremolita.✔️</p></li><li><p>Glaucofana.✔️</p></li><li><p>Barroisita - Catoforita. ❌</p></li></ul><p>13.4. Piroxenos.</p><ul><li><p>Ortopiroxeno - Enstatita y Jadeita.✔️</p></li><li><p>Clinopiroxeno - Augita, Diópsido, Onfacita y Aegirina.✔️</p></li></ul><p>13.5. Piroxenoides.</p><ul><li><p>Wollastonita. ❌</p></li><li><p>Rodonita. ❌</p></li></ul><p>13.6. Nesosilicatos, Sorosilicatos y Ciclosilicatos.</p><ul><li><p>Olivino.✔️</p></li><li><p>Circón.✔️</p></li><li><p>Titanita/Esfena.✔️</p></li><li><p>Andalucita. ❌</p></li><li><p>Sillimanita. ❌</p></li><li><p>Cianita/Distena. ❌</p></li><li><p>Estaurolita. ❌</p></li><li><p>Zoisita - Clinozoisita. ❌</p></li><li><p>Epidota.✔️</p></li><li><p>Piemontita. ❌</p></li><li><p>Turmalina, Chorlo y Dravita. ✔️</p></li><li><p>Berilo. ❌</p></li><li><p>Cordierita. ❌</p></li></ul><p>13.6. Clasificación del Cuarzo.</p><ul><li><p>Cuarzo.✔️</p></li><li><p>Cuarzo - Mono, Poli y Criptocristalino. ❌</p></li><li><p>Formas y texturas del Cuarzo. ❌</p></li><li><p>Calcedonia. ❌</p></li></ul><p>13.7. Clasificación de Feldespatos.</p><ul><li><p>Ortoclasa.✔️</p></li><li><p>Sanidina.✔️</p></li><li><p>Plagioclasa.✔️</p></li><li><p>Anortoclasa.✔️</p></li><li><p>Microclina.✔️</p></li></ul><p>13.8. Desmezclas.</p><ul><li><p>Pertita. 〰️</p></li></ul><p>13.9. Carbonatos y Fosfatos.</p><ul><li><p>Calcita - Micrita y Esparita. ❌</p></li><li><p>Dolomita. ❌</p></li><li><p>Siderita.✔️</p></li><li><p>Aragonito. ❌</p></li><li><p>Apatito.✔️</p></li></ul><p>13.10. Óxidos no opacos, hidróxidos y sulfatos.</p><ul><li><p>Espinela. ❌</p></li><li><p>Rutilo. ❌</p></li><li><p>Brucita. ❌</p></li><li><p>Yeso. ❌</p></li><li><p>Anhidrita. ❌</p></li><li><p>Alunita. ❌</p></li></ul><p>14. Minerales ígneos 🌋.</p><p>15. Minerales metamórficos ♒.</p><p>16. Minerales sedimentarios🏞️.</p>]]></description>
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         <pubDate>2022-06-09 04:00:47 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215799019</link>
         <description><![CDATA[<div>Nicoles Paralelos 4x</div>]]></description>
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         <pubDate>2022-06-09 04:22:49 UTC</pubDate>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215800145</link>
         <description><![CDATA[<div>Nicoles Cruzados 4x</div>]]></description>
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         <pubDate>2022-06-09 04:24:18 UTC</pubDate>
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      <item>
         <title>Biotita K(Fe,Mg)3(Si3Al)O10(OH,F)2</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215804210</link>
         <description><![CDATA[<ul><li>ÍGNEO-METAMÓRFICO</li></ul><div>FILOSILICATO/MICA<br>La biotita es un mineral laminar que puede presentar exfoliación y pleocroismo en la sección delgada, algunas veces no los presenta por estar cortada en el corte basal. Presenta color pardo en paralelos y en cruzados puede presentar color de interferencia de 3ro-4to orden sobre el color pardo bien definido.&nbsp;<br><br>**La biotita puede antera anfiboles por lo que puede confundirse fácilmente con ellos en especial la hornblenda ya que se presentan juntas frecuentemente en las rocas ígneas.<br>**La biotita se puede alterar a clorita.<br><br>ASOCIACIÓN: Muy frecuente en rocas ígneas (granitos, aplitas, pegmatitas, granodioritas, sienitas, sienitas nefelínicas) así como en sus equivalentes volcánicas. Puede encontrarse como fase tardía en dioritas, gabros noritas y anortositas. En rocas con metamorfismo regional (esquistos, filitas, gneises y migmatitas) y con metamorfismo de contacto (corneanas)<br><br></div><pre>http://www.alexstrekeisen.it/pluto/biotite.php</pre>]]></description>
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         <pubDate>2022-06-09 04:29:58 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215805387</link>
         <description><![CDATA[<div>Biotita N//</div>]]></description>
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         <pubDate>2022-06-09 04:31:30 UTC</pubDate>
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      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215807876</link>
         <description><![CDATA[<div>Biotita centrada, con plagioclasa, hornblenda y minerales opacos 4x N//</div>]]></description>
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         <pubDate>2022-06-09 04:34:48 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215808875</link>
         <description><![CDATA[<div>Biotita centrada, con plagioclasa, hornblenda y minerales opacos 4x NX</div>]]></description>
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         <pubDate>2022-06-09 04:36:11 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215811791</link>
         <description><![CDATA[<div>Biotita más oscura con exfoliación, Biotita más clara sin exfoliación (corte basal). Ortoclasa 4x N//</div>]]></description>
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         <pubDate>2022-06-09 04:39:42 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215814021</link>
         <description><![CDATA[<div>Biotita sin colores de interferencia identificables. 4x NX</div>]]></description>
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         <pubDate>2022-06-09 04:42:22 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215816431</link>
         <description><![CDATA[<div>Biotita NX</div>]]></description>
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         <pubDate>2022-06-09 04:44:54 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215816864</link>
         <description><![CDATA[<div>Biotita N//</div>]]></description>
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         <pubDate>2022-06-09 04:45:21 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215817270</link>
         <description><![CDATA[<div>Biotita NX</div>]]></description>
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         <pubDate>2022-06-09 04:45:47 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215817657</link>
         <description><![CDATA[<div>Biotita N//</div>]]></description>
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         <pubDate>2022-06-09 04:46:13 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215817924</link>
         <description><![CDATA[<div>Biotita NX</div>]]></description>
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         <pubDate>2022-06-09 04:46:33 UTC</pubDate>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215821646</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-06-09 04:50:24 UTC</pubDate>
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         <title>Hornblenda (Ca,Na)2(Mg,Fe)4,Al(Si7Al)O22(OH,F)2</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215825225</link>
         <description><![CDATA[<ul><li>ÍGNEO-METAMÓRFICO</li></ul><div>INOSILICATO/ANFÍBOL<br>La hornblenda es un mineral prismático de color verde pasto claro, presentará pleocroismo (propiedades diagnósticas) en Nicoles cruzados tendrá color de interferencia de finales de 1er orden y principios del 2do o será verde anómalo similar al verde en cruzados. Exfoliación paralela a eje C.<br><br>**Puede alterarse a biotita por lo que es muy fácil de confundir con esta cuando la alteración es excesiva.<br><br>ASOCIACIÓN:<strong> </strong>Muy corriente en diferentes tipos de rocas. En rocas ígneas (granitos calcoalcalinos y granodioritas, más comúnmente en sienitas y&nbsp; dioritas) y en sus equivalentes volcánicos. En rocas metamórficas de grado medio y alto (anfibolitas, esquistos y gneises). También en rocas carbonatadas metamorfizadas (mármoles, skarns)<br><br></div><pre>http://www.alexstrekeisen.it/pluto/anfiboli.php</pre>]]></description>
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         <pubDate>2022-06-09 04:54:26 UTC</pubDate>
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      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215835129</link>
         <description><![CDATA[<div>Hornblenda con plagioclasa, Biotita, minerales opacos. 4x N//</div>]]></description>
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         <pubDate>2022-06-09 05:05:33 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215836317</link>
         <description><![CDATA[<div>Hornblenda verde en cruzados con plagioclasa, biotita, minerales opacos. 4x NX</div>]]></description>
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         <pubDate>2022-06-09 05:06:42 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215837690</link>
         <description><![CDATA[<div>Hornblenda N//</div>]]></description>
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         <pubDate>2022-06-09 05:08:04 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215838664</link>
         <description><![CDATA[<div>Hornblenda NX con plagioclasa zonada.</div>]]></description>
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         <pubDate>2022-06-09 05:09:00 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215839098</link>
         <description><![CDATA[<div>Hornblenda N//</div>]]></description>
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         <pubDate>2022-06-09 05:09:27 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215839453</link>
         <description><![CDATA[<div>Hornblenda NX</div>]]></description>
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         <pubDate>2022-06-09 05:09:53 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215840104</link>
         <description><![CDATA[<div>Hornblenda N//</div>]]></description>
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         <pubDate>2022-06-09 05:10:31 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215840503</link>
         <description><![CDATA[<div>Hornblenda NX</div>]]></description>
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         <pubDate>2022-06-09 05:10:56 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215840952</link>
         <description><![CDATA[<div>Hornblenda N//</div>]]></description>
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         <pubDate>2022-06-09 05:11:22 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215841395</link>
         <description><![CDATA[<div>Hornblenda NX</div>]]></description>
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         <pubDate>2022-06-09 05:11:49 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2215843399</link>
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         <pubDate>2022-06-09 05:13:50 UTC</pubDate>
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      <item>
         <title>Carta de color de interferencia y Birrefrigencia</title>
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         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218196048</link>
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         <pubDate>2022-06-11 15:44:51 UTC</pubDate>
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      <item>
         <title>Ópalo Orgánico</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218197295</link>
         <description><![CDATA[<div>4x N//</div>]]></description>
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         <pubDate>2022-06-11 15:47:52 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218197604</link>
         <description><![CDATA[<div>4x NX</div>]]></description>
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         <pubDate>2022-06-11 15:48:26 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218197861</link>
         <description><![CDATA[<div>10x N//</div>]]></description>
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         <pubDate>2022-06-11 15:49:00 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218198047</link>
         <description><![CDATA[<div>10x NX</div>]]></description>
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         <pubDate>2022-06-11 15:49:29 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218198254</link>
         <description><![CDATA[<div>20x N//</div>]]></description>
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         <pubDate>2022-06-11 15:50:00 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218198927</link>
         <description><![CDATA[<div>20x NX</div>]]></description>
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         <pubDate>2022-06-11 15:51:53 UTC</pubDate>
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      <item>
         <title>Ópalo Inorgánico</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218199478</link>
         <description><![CDATA[<div>4x N//</div>]]></description>
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         <pubDate>2022-06-11 15:52:33 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218199681</link>
         <description><![CDATA[<div>4x NX</div>]]></description>
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         <pubDate>2022-06-11 15:53:08 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218199853</link>
         <description><![CDATA[<div>10x N//</div>]]></description>
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         <pubDate>2022-06-11 15:53:37 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218200060</link>
         <description><![CDATA[<div>10x NX</div>]]></description>
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         <pubDate>2022-06-11 15:54:05 UTC</pubDate>
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      <item>
         <title>Sodalita (Na4(Al3Si3)O12 Cl)</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218201151</link>
         <description><![CDATA[<ul><li>ÍGNEO-METAMÓRFICO</li></ul><div>TECTOSILICATO/FELDESPATÓIDE<br><strong>FÓRMULA: </strong>Na<sub>4</sub>(Al<sub>3</sub>Si<sub>3</sub>)O<sub>12</sub> Cl</div><div><strong>SISTEMA: </strong>Cúbico</div><div><strong>GRUPO: </strong>Tectosilicatos/feldespatoides</div><div>ÍGNEO-METAMÓRFICO<br><br></div><div><strong>FORMA: </strong>Generalmente xenomorfa en rocas plutónicas</div><div><strong>COLOR: </strong>Incoloro aunque puede tener color azul muy pálido</div><div><strong>PLEOCROÍSMO:&nbsp;</strong></div><div><strong>MACLAS: </strong>Según {111}, pero no se aprecia debido a su isotropía</div><div><strong>EXFOLIACIÓN: </strong>Débil según {011}</div><div><strong>ÍNDICES DE REFRACCIÓN</strong></div><div>&nbsp; &nbsp; n: 1,483 - 1,487</div><div>&nbsp; &nbsp; &nbsp;</div><div><strong>RELIEVE: </strong>Medio -&nbsp;</div><div><strong>BIRREFRINGENCIA: </strong>0 &nbsp; (ISÓTROPO)</div><div><strong>COLOR DE INTERFERENCIA: -</strong></div><div><strong>ORIENTACIÓN: -</strong></div><div><strong>ELONGACIÓN: -</strong></div><div><strong>ÁNGULO DE EXTINCIÓN: -</strong></div><div><strong>SIGNO ÓPTICO: </strong>Isótropo</div><div><br></div><div><strong>OTROS DATOS:&nbsp;</strong></div><div><strong>ASOCIACIÓN: </strong>Relativamente rara, en rocas deficitarias en sílice como sienitas nefelínicas. Puede encontrarse en carbonatos con metamorfismo de contacto con rocas ígneas alcalinas</div><div><br><br>Es un mineral incoloro que se puede diferenciar de la fluorita que es con quién más se confunde puesto que la fluorita tiene triple exfoliación y la sodalita solo uno.<br><br></div><pre>http://www.alexstrekeisen.it/pluto/sodalite.php

http://www.alexstrekeisen.it/pluto/lazulite.php

http://www.alexstrekeisen.it/pluto/hauyna.php</pre>]]></description>
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         <pubDate>2022-06-11 15:56:48 UTC</pubDate>
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      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218201433</link>
         <description><![CDATA[<div>4x N//</div>]]></description>
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         <pubDate>2022-06-11 15:57:29 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218201659</link>
         <description><![CDATA[<div>4x NX</div>]]></description>
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         <pubDate>2022-06-11 15:57:58 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218202027</link>
         <description><![CDATA[<div>4x N//</div>]]></description>
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         <pubDate>2022-06-11 15:58:27 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218202261</link>
         <description><![CDATA[<div>4x NX</div>]]></description>
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         <pubDate>2022-06-11 15:58:59 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218202261</guid>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218202759</link>
         <description><![CDATA[<div>4x N//</div>]]></description>
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         <pubDate>2022-06-11 15:59:37 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218202759</guid>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218203017</link>
         <description><![CDATA[<div>4x NX</div>]]></description>
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         <pubDate>2022-06-11 16:00:03 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218203017</guid>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218280520</link>
         <description><![CDATA[<div>Sienita Nefelinica N//</div>]]></description>
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         <pubDate>2022-06-11 19:51:28 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218280702</link>
         <description><![CDATA[<div>Sienita Nefelinica NX</div>]]></description>
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         <pubDate>2022-06-11 19:52:00 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218280785</link>
         <description><![CDATA[<div>Sienita N//</div>]]></description>
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         <pubDate>2022-06-11 19:52:19 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218280785</guid>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218280837</link>
         <description><![CDATA[<div>Sienita NX</div>]]></description>
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         <pubDate>2022-06-11 19:52:33 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218280837</guid>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218280940</link>
         <description><![CDATA[<div>Sienita N//</div>]]></description>
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         <pubDate>2022-06-11 19:52:59 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218280940</guid>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218281008</link>
         <description><![CDATA[<div>Sienita NX</div>]]></description>
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         <pubDate>2022-06-11 19:53:13 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218281008</guid>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218281085</link>
         <description><![CDATA[<div>Sienita N//</div>]]></description>
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         <pubDate>2022-06-11 19:53:28 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218281468</link>
         <description><![CDATA[<div>Sienita NX</div>]]></description>
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         <pubDate>2022-06-11 19:54:42 UTC</pubDate>
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      </item>
      <item>
         <title>Halita (NaCl)</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218283546</link>
         <description><![CDATA[<ul><li>SEDIMENTARIO</li></ul><div>HALURO<br>La halita es un haluro, que puede estar presente en las rocas. Principalmente en rocas sedimentarias por precipitación. Se reconoce bajo el microscopio por tener un relieve medio-bajo y porque muchas veces presenta hábito cúbico o exfoliación imperfecta.</div>]]></description>
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         <pubDate>2022-06-11 20:01:32 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218283546</guid>
      </item>
      <item>
         <title>Fluorita (CaF2)</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218284779</link>
         <description><![CDATA[<ul><li>ÍGNEO</li></ul><div>HALURO<br>La fluorita presenta exfoliación en 3 direcciones, lo que permite su identificación (propiedad diagnóstica).<br><br>ASOCIACIÓN: Como mineral hidrotermal asociado a mineralizaciones de sulfuros. En rocas ígneas graníticas, pegmatitas o en sienitas puede aparecer como accesorio<br><br></div><pre>http://www.alexstrekeisen.it/pluto/fluorite.php</pre>]]></description>
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         <pubDate>2022-06-11 20:05:08 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218284779</guid>
      </item>
      <item>
         <title>Muestra de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218285189</link>
         <description><![CDATA[<div>Halita a 20x</div>]]></description>
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         <pubDate>2022-06-11 20:06:29 UTC</pubDate>
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      </item>
      <item>
         <title>Nombres de los grupos de anfiboles y piroxenos</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218287316</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-06-11 20:14:10 UTC</pubDate>
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      </item>
      <item>
         <title>Hábito y Forma de los Minerales</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218289265</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-06-11 20:20:46 UTC</pubDate>
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      </item>
      <item>
         <title>Serie de Cristalización de Bowen</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218289876</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-06-11 20:22:53 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218293778</link>
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         <pubDate>2022-06-11 20:34:30 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218294023</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-06-11 20:35:17 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218294371</link>
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         <pubDate>2022-06-11 20:36:39 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218294371</guid>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218295057</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-06-11 20:39:16 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218295416</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-06-11 20:40:42 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218295416</guid>
      </item>
      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218299056</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-06-11 20:54:10 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218299763</link>
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         <pubDate>2022-06-11 20:55:39 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218299763</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218300436</link>
         <description><![CDATA[<div>Vidrio volcánico con plagioclasa 4x NX</div>]]></description>
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         <pubDate>2022-06-11 20:57:59 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218300436</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218300596</link>
         <description><![CDATA[<div>Vidrio volcánico con cristales de plagiocalsa 4x N//</div>]]></description>
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         <pubDate>2022-06-11 20:58:38 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218300596</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218300927</link>
         <description><![CDATA[<div>Vidrio volcánico 4x N//</div>]]></description>
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         <pubDate>2022-06-11 20:59:52 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218300927</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218301056</link>
         <description><![CDATA[<div>Vidrio volcánico 4x NX</div>]]></description>
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         <pubDate>2022-06-11 21:00:24 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218301056</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218301323</link>
         <description><![CDATA[<div>Vidrio volcánico amigdalar 4x N//</div>]]></description>
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         <pubDate>2022-06-11 21:01:14 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218301323</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218301791</link>
         <description><![CDATA[<div>Vidrio volcánico amigdalar 4x NX</div>]]></description>
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         <pubDate>2022-06-11 21:03:04 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218301791</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218302249</link>
         <description><![CDATA[<div>Vidrio volcánico con lo que aparenta tener cristales muy grandes pero sigue siendo vidrio volcánico. 4x N//</div>]]></description>
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         <pubDate>2022-06-11 21:04:44 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218302249</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218302437</link>
         <description><![CDATA[<div>Vidrio volcánico 4x NX</div>]]></description>
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         <pubDate>2022-06-11 21:05:26 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218302599</link>
         <description><![CDATA[<div>Vidrio volcánico 4x N//</div>]]></description>
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         <pubDate>2022-06-11 21:06:00 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218302832</link>
         <description><![CDATA[<div>Vidrio volcánico 4x NX</div>]]></description>
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         <pubDate>2022-06-11 21:07:01 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218303041</link>
         <description><![CDATA[<div>Vidrio volcánico 4x N//</div>]]></description>
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         <pubDate>2022-06-11 21:07:41 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218303174</link>
         <description><![CDATA[<div>Vidrio volcánico 4x NX</div>]]></description>
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         <pubDate>2022-06-11 21:08:09 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218303315</link>
         <description><![CDATA[<div>Vidrio volcánico Komatita 4x NX</div>]]></description>
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         <pubDate>2022-06-11 21:08:41 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218304793</link>
         <description><![CDATA[<div>Vidrio volcánico Komatita 4x N//</div>]]></description>
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         <pubDate>2022-06-11 21:14:27 UTC</pubDate>
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      </item>
      <item>
         <title>Minerales Anisotrópicos</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218307726</link>
         <description><![CDATA[<div>En las sustancias anisotrópicas, que comprenden todos los cristales, excepto los del sistema isométrico, la velocidad de la luz varía con la dirección cristalográfica y por lo tanto existe un intervalo de índices de refracción. Aunque en algunas ocasiones los Anisotrópicos pueden comportarse como Isotópicos si se les corta por su eje óptico (eje C) y tendrán las mínimas propiedades en cruzados como la Birrefrigencia.<br><br></div><ul><li>Uniaxiales: Minerales tetragonales y hexagonales.</li><li>Biaxiales: Minerales ortorrómbicos, monoclínicos y triclínicos.</li></ul><div>Como la simetría de los minerales disminuye, los minerales ópticamente más complejos y se caracterizan un número creciente de constantes ópticas medibles. Por lo tanto teóricamente es fácil identificar minerales biaxiales que los isotrópicos. Porque la red tiene algunas características ópticas que lo diferencia unos de otros. Sin embargo, en la práctica los minerales uniaxiales generalmente son los más fáciles, siendo de complejidad intermedia, y en menor número que los biaxiales.<br><br>Extraído de:</div><pre>https://www.sgm.gob.mx/Web/MuseoVirtual/Minerales/Mineralogia-optica.html#:~:text=En las sustancias anisotrópicas, que,intervalo de índices de refracción.</pre><div><br><br></div><div><br></div>]]></description>
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         <pubDate>2022-06-11 21:25:57 UTC</pubDate>
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      </item>
      <item>
         <title>Propiedades ópticas de los minerales</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218310342</link>
         <description><![CDATA[<div><strong>•PARA TODOS LOS MINERALES:</strong><br>Para todos los grupos de minerales se observan las siguientes propiedades y/o características:<br><br></div><ol><li>Forma, contorno</li><li>Tamaño</li><li>Clivaje, fractura</li><li>Maclas, zoneamiento</li><li>Inclusiones, intercrecimientos, alteraciones</li></ol><div>&nbsp;<br><strong>•MINERALES OPACOS:</strong></div><div>Para los minerales opacos las siguientes propiedades y/o características pueden ser observadas:<br><br></div><ol><li>Transparencia de bordes delgados a lo largo de fracturas.</li><li>Color y lustre en luz reflejada.</li><li>Estrías superficiales o amolduras sobre secciones delgadas de minerales opacos.</li></ol><div>&nbsp;<br><strong>•MINERALES ISÓTROPICOS:</strong></div><div>Propiedades adicionales para minerales isotrópicos que pueden indicarse son:<br><br></div><ol><li>Color</li><li>Índice de refracción (<em>n</em>)</li></ol><div>&nbsp;<br><strong>•MINERALES ANISOTRÓPICOS (UNIAXICOS):</strong></div><div>Para minerales uniaxiales:<br><br></div><ol><li>Color y pleocroísmo</li><li>Índice de refracción y birrefringencia</li><li>Signo óptico (+) o (-)</li><li>Carácter de elongación o dirección de clivaje</li></ol><div>&nbsp;<br><strong>•MINERALES ANISOTRÓPICOS (BIAXICOS):</strong></div><div>Para minerales biaxiales:<br><br></div><ol><li>&nbsp;Color y pleocroísmo.</li><li>Índices de refracción (α β γ ) y birrefringencia.</li><li>Tamaño de 2V y dispersión de ejes ópticos.</li><li>Orientación (relación de direcciones ópticas, (α β γ ) a las direcciones cristalográficas, a, b, c.</li></ol><ul><li>Carácter óptico o signo, (+) o (-).</li><li>Tipo de extinción y tamaño de ángulos de extinción (excepto en minerales ortorrómbicos).</li><li>Carácter de elongación y clivaje, posición del plano óptico.</li></ul><div>Extraído de:</div><pre>https://www.sgm.gob.mx/Web/MuseoVirtual/Minerales/Mineralogia-optica.html#:~:text=En las sustancias anisotrópicas, que,intervalo de índices de refracción.</pre>]]></description>
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         <pubDate>2022-06-11 21:37:25 UTC</pubDate>
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      </item>
      <item>
         <title>Clorita (Ni,MG,Fe)/(MG,Fe,Al)6(Si,Al)4O10 (OH,O)8 /(OH)8</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218326123</link>
         <description><![CDATA[<ul><li>METAMÓRFICO-ÍGNEO ALTERACIÓN</li></ul><div>FILOSILICATO/MICA<br>Mineral perteneciente a las micas, sus propiedades diagnósticas son el color verde pastel en paralelos y colores anómalos en cruzados (verde, azul rey, morado y café). Es un mineral típico de alteración, por lo que es frecuente verlo alterando biotitas, hornblenda, plagioclasas, etc.<br><br>ASOCIACIÓN: Común en rocas metamórficas (diagnóstico de facies de esquistos verdes). Común en diferentes tipos de rocas ígneas por alteración de minerales ferromagnesianos (biotita, anfíboles, piroxenos, granate...)<br><br></div><pre>http://www.alexstrekeisen.it/pluto/clorite.php</pre>]]></description>
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         <pubDate>2022-06-11 22:50:29 UTC</pubDate>
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         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218326642</link>
         <description><![CDATA[<div>Clorita alterando Biotitas 4x N//</div>]]></description>
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         <pubDate>2022-06-11 22:53:15 UTC</pubDate>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218326743</link>
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         <pubDate>2022-06-11 22:53:52 UTC</pubDate>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218326950</link>
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         <pubDate>2022-06-11 22:54:58 UTC</pubDate>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218327212</link>
         <description><![CDATA[<div>Clorita alterando Biotita y Hornblenda 4x NX</div>]]></description>
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         <pubDate>2022-06-11 22:56:18 UTC</pubDate>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218327410</link>
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         <pubDate>2022-06-11 23:01:11 UTC</pubDate>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218328461</link>
         <description><![CDATA[<div>Clorita alterando Biotita 4x N//</div>]]></description>
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         <pubDate>2022-06-11 23:03:33 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218328654</link>
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         <pubDate>2022-06-11 23:04:40 UTC</pubDate>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218329418</link>
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         <pubDate>2022-06-11 23:06:32 UTC</pubDate>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218329564</link>
         <description><![CDATA[<div>Clorita alterando Cordierita N//</div>]]></description>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218329633</link>
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         <pubDate>2022-06-11 23:07:40 UTC</pubDate>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218329747</link>
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         <pubDate>2022-06-11 23:08:15 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218329911</link>
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         <pubDate>2022-06-11 23:09:08 UTC</pubDate>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218330005</link>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218330123</link>
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         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218330333</link>
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         <pubDate>2022-06-11 23:11:36 UTC</pubDate>
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         <author>julianhernandezroca</author>
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         <pubDate>2022-06-11 23:12:20 UTC</pubDate>
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         <pubDate>2022-06-11 23:15:02 UTC</pubDate>
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         <author>julianhernandezroca</author>
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         <author>julianhernandezroca</author>
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         <pubDate>2022-06-11 23:37:37 UTC</pubDate>
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         <pubDate>2022-06-11 23:41:38 UTC</pubDate>
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      </item>
      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218338314</link>
         <description><![CDATA[<div>Moscovita 4x N//</div>]]></description>
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         <pubDate>2022-06-11 23:51:32 UTC</pubDate>
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      </item>
      <item>
         <title>Moscovita KAl2(Si3Al)O10(OH,F)2</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218339017</link>
         <description><![CDATA[<ul><li>ÍGNEO-METAMÓRFICO-RARO SEDIMENTARIO</li></ul><div>FILOSILICATO/MICA<br>La moscovita es una mica que tiene como propiedad diagnóstica la extinción moteada en Nicoles Cruzados. Además en paralelos es incolora aunque a veces tiene un leve pleocroismo y se presenta frecuentemente en láminas delgadas.<br><br>La sericita es un mineral arcilloso que altera varios feldespatos y Maficos. Su versión cristalizada es la moscovita.<br><br>ASOCIACIÓN: Muy común en rocas graníticas, granodioritas, aplitas y pegmatitas. En rocas metamórficas (esquistos, filitas, cuarcitas, corneanas y gneises). En agregados de grano fino (sericita) como mineral de alteración en feldespatos y andalucita. Como granos detríticos en rocas sedimentarias clásticas inmaduras<br><br></div><pre>http://www.alexstrekeisen.it/pluto/muscovite.php

http://www.alexstrekeisen.it/pluto/sericite.php</pre>]]></description>
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         <pubDate>2022-06-11 23:53:03 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218339477</link>
         <description><![CDATA[<div>Moscovita muy bien cristalizada donde se ve claramente la extinción moteada. 4x NX</div>]]></description>
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         <pubDate>2022-06-11 23:54:58 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218339781</link>
         <description><![CDATA[<div>Moscovita en láminas delgadas 4x N//</div>]]></description>
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         <pubDate>2022-06-11 23:56:50 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218340264</link>
         <description><![CDATA[<div>Moscovita en láminas delgadas 4x NX&nbsp;</div>]]></description>
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         <pubDate>2022-06-11 23:58:42 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218340563</link>
         <description><![CDATA[<div>Moscovita en láminas delgadas 4x NX</div>]]></description>
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         <pubDate>2022-06-12 00:00:29 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218340755</link>
         <description><![CDATA[<div>Moscovita en láminas delgadas 4x N//</div>]]></description>
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         <pubDate>2022-06-12 00:01:28 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218342963</link>
         <description><![CDATA[<div>Moscovita esquisto N//</div>]]></description>
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         <pubDate>2022-06-12 00:11:56 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218343020</link>
         <description><![CDATA[<div>Moscovita 4x NX</div>]]></description>
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         <pubDate>2022-06-12 00:12:15 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218343113</link>
         <description><![CDATA[<div>Moscovita 4x N//</div>]]></description>
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         <pubDate>2022-06-12 00:12:35 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218343168</link>
         <description><![CDATA[<div>Moscovita 4x NX</div>]]></description>
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         <pubDate>2022-06-12 00:12:54 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218343310</link>
         <description><![CDATA[<div>Moscovita 4x N//</div>]]></description>
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         <pubDate>2022-06-12 00:13:36 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218343394</link>
         <description><![CDATA[<div>Moscovita 4x NX</div>]]></description>
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         <pubDate>2022-06-12 00:14:03 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218343561</link>
         <description><![CDATA[<div>Moscovita</div>]]></description>
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         <pubDate>2022-06-12 00:15:00 UTC</pubDate>
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      </item>
      <item>
         <title>Glaucofana Na2(Mg3Al2)Si8O22(OH)2</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218346082</link>
         <description><![CDATA[<ul><li>METAMÓRFICO-RARO ÍGNEO</li></ul><div>INOSILICATO/ANFÍBOL<br>La Glaucofana es un anfibol que tiene como propiedad diagnóstica color azul-lila pleocroica en Nicoles paralelos.<br><br>ASOCIACIÓN: La glaucofana y la crossita (término intermedio) son características de rocas con metamorfismo regional de alta presión y baja temperatura como esquistos (azules), eclogitas y mármoles. La riebeckita se encuentra en rocas ígneas (granitos, sienitas y sienitas nefelínicas) y en rocas ricas en hierro (“iron formations”) metamorfizadas en forma de crocidolita. La crossita es un término de composición intermedia que se encuentra en los mismos tipos de roca que la glaucofana.<br><br></div><pre>http://www.alexstrekeisen.it/pluto/anfiboli.php</pre><div><br>&nbsp;<br><br><br></div>]]></description>
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         <pubDate>2022-06-12 00:28:54 UTC</pubDate>
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      </item>
      <item>
         <title>Tremolita Ca2(Mg,Fe)5Si8O22(OH)2</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218346240</link>
         <description><![CDATA[<ul><li>METAMÓRFICO-METAÍGNEO</li></ul><div>INOSILICATO/ANFÍBOL<br>La tremolita es un anfibol que tiene como propiedad diagnóstica ser incoloro en paralelos y colores de 4-5to orden en cruzados.<br><br>ASOCIACIÓN: La tremolita se da en calizas dolomíticas metamórficas, esquistos. Tremolita y actinolita pueden encontrarse en rocas básicas y ultrabásicas con metamorfizadas<br><br></div><pre>http://www.alexstrekeisen.it/pluto/anfiboli.php</pre><div>&nbsp;</div>]]></description>
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         <pubDate>2022-06-12 00:29:43 UTC</pubDate>
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      <item>
         <title>Lamprobolita (Ca,Na)2(Mg,Fe)4,Al(Si7Al)O22(OH,F)2</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218346454</link>
         <description><![CDATA[<ul><li>ÍGNEO</li></ul><div>INOSILICATO/ANFÍBOL<br>La lamprobolita es un anfibol también llamado Oxihornblenda, tiene como propiedad diagnóstica ser parda en paralelos con un borde oscuro intenso por el componente ferroso.<br><br>ASOCIACIÓN: Rocas volcánicas básicas de composiciones básicas e intermedias (andesitas, traquitas, basaltos)<br><br></div><pre>http://www.alexstrekeisen.it/pluto/anfiboli.php</pre><div><br>&nbsp;</div>]]></description>
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         <pubDate>2022-06-12 00:30:56 UTC</pubDate>
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      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218347087</link>
         <description><![CDATA[<div>Lamprobolita 4x N//</div>]]></description>
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         <pubDate>2022-06-12 00:34:25 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218347216</link>
         <description><![CDATA[<div>Lamprobolita 4x NX</div>]]></description>
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         <pubDate>2022-06-12 00:35:11 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218347619</link>
         <description><![CDATA[<div>Lamprobolita 4x N//</div>]]></description>
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         <pubDate>2022-06-12 00:37:30 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218347852</link>
         <description><![CDATA[<div>Lamprobolita 4x NX</div>]]></description>
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         <pubDate>2022-06-12 00:38:49 UTC</pubDate>
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      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218348027</link>
         <description><![CDATA[<div>Tremolita 4x N//</div>]]></description>
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         <pubDate>2022-06-12 00:39:52 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218348114</link>
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         <pubDate>2022-06-12 00:40:21 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218348178</link>
         <description><![CDATA[<div>Tremolita 4x N//</div>]]></description>
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         <pubDate>2022-06-12 00:40:49 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218348259</link>
         <description><![CDATA[<div>Tremolita 4x NX</div>]]></description>
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         <pubDate>2022-06-12 00:41:15 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218348330</link>
         <description><![CDATA[<div>Tremolita 4x N//</div>]]></description>
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         <pubDate>2022-06-12 00:41:43 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218348422</link>
         <description><![CDATA[<div>Tremolita 4x NX</div>]]></description>
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         <pubDate>2022-06-12 00:42:12 UTC</pubDate>
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      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218348896</link>
         <description><![CDATA[<div>Glaucofana 4x N//</div>]]></description>
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         <pubDate>2022-06-12 00:43:14 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218349066</link>
         <description><![CDATA[<div>Glaucofana 4x NX</div>]]></description>
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         <pubDate>2022-06-12 00:44:03 UTC</pubDate>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218349172</link>
         <description><![CDATA[<div>Glaucofana 4x N//</div>]]></description>
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         <pubDate>2022-06-12 00:44:42 UTC</pubDate>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218349321</link>
         <description><![CDATA[<div>Glaucofana 4x NX</div>]]></description>
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         <pubDate>2022-06-12 00:45:32 UTC</pubDate>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218349821</link>
         <description><![CDATA[<div>Lamprobolita-Oxihornblenda N//</div>]]></description>
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         <pubDate>2022-06-12 00:48:13 UTC</pubDate>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218349896</link>
         <description><![CDATA[<div>Lamprobolita-Oxihornblenda NX</div>]]></description>
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         <pubDate>2022-06-12 00:48:36 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218358215</link>
         <description><![CDATA[<div>Tremolita en Mármol NX</div>]]></description>
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         <pubDate>2022-06-12 01:30:33 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218358292</link>
         <description><![CDATA[<div>Tremolita en Mármol N//</div>]]></description>
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         <pubDate>2022-06-12 01:30:55 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218358412</link>
         <description><![CDATA[<div>Tremolita en Mármol N//</div>]]></description>
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         <pubDate>2022-06-12 01:31:40 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218358455</link>
         <description><![CDATA[<div>Tremolita en Mármol NX</div>]]></description>
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         <pubDate>2022-06-12 01:31:56 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218358939</link>
         <description><![CDATA[<div>Glaucofana en Cuarcita N//</div>]]></description>
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         <pubDate>2022-06-12 01:34:35 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218359086</link>
         <description><![CDATA[<div>Glaucofana en Cuarcita NX</div>]]></description>
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         <pubDate>2022-06-12 01:35:25 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218359169</link>
         <description><![CDATA[<div>Glaucofana en Eclogita N//</div>]]></description>
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         <pubDate>2022-06-12 01:36:02 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218359297</link>
         <description><![CDATA[<div>Glaucofana en Eclogita NX</div>]]></description>
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         <pubDate>2022-06-12 01:36:43 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218360733</link>
         <description><![CDATA[Tremolita-Actinolita]]></description>
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         <pubDate>2022-06-12 01:43:34 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218360896</link>
         <description><![CDATA[<div>Barroisita-Glaucofana</div>]]></description>
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         <pubDate>2022-06-12 01:44:18 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218360896</guid>
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      <item>
         <title>Cuarzo SiO2</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218362795</link>
         <description><![CDATA[<ul><li>ÍGNEO-SEDIMENTARIO-METAMÓRFICO</li></ul><div>TECTOSILICATO<br>El cuarzo es uno de los minerales más variado presente en las rocas y es el componente más frecuente de casi todas las rocas. Es raro verlo euhedral puesto que es el último en formarse según la serie de cristalización de Bowen en las rocas ígneas y en las rocas sedimentarias se ve redondeado por el transporte. Únicamente en las rocas Metamórficas por recristalización se le ve con formas euhedrales.<br><br>Sus propiedades diagnósticas son que no se altera a ningún mineral, presenta fractura donde puede tener óxidos de hierro recristalizados. Es anhedral en la mayoría de las ocaciones y presenta colores de interferencia de primer orden.<br><br>ASOCIACIÓN: Mineral muy común y abundante en: rocas ácidas, junto a feldespatos potásicos, plagioclasas, moscovita y biotita (granitos, granodioritas, aplitas y pegmatitas), rocas metamórficas (gneises, esquistos y cuarcitas), sedimentarias (arenas y areniscas) y en rocas filonianas.<br><br></div><pre>http://www.alexstrekeisen.it/pluto/quarzo.php</pre><div><br>&nbsp;</div>]]></description>
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         <pubDate>2022-06-12 01:53:36 UTC</pubDate>
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      <item>
         <title>Ortoclasa KAlSi3O8</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218363360</link>
         <description><![CDATA[<ul><li>ÍGNEO-METAMÓRFICO-SEDIMENTARIO</li></ul><div>TECTOSILICATO/FELDESPATO<br>La Ortoclasa es un mineral del grupo de los feldespatos, especifícamente a los feldespatos alcalinos. También se le conoce como Ortosa o Feldespato Potásico. Esta presente en todos los tipos de rocas y es un mineral muy importante para la clasificación de algunas de ellas.<br><br>Fácil de confundir con el Cuarzo, sus principales diferencias son que la Ortoclasa presenta exfoliación y se altera con facilidad a sericita y caolinita. En el caso de que la Ortoclasa no esté alterada se pueden apreciar a veces su exfoliación.<br><br>ASOCIACIÓN: Generalmente en rocas ígneas ácidas con cuarzo como: granitos, granodioritas y sienitas y sus equivalentes volcánicas. Es un constituyente mayoritario de las pegmatitas. También se encuentra en sienitas nefelínicas (con feldespatoides) y en gneises ácidos<br><br><br></div><pre>http://www.alexstrekeisen.it/pluto/feldspati.php

http://www.alexstrekeisen.it/pluto/feldspatialcalini.php</pre><div><br><br></div>]]></description>
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         <pubDate>2022-06-12 01:56:36 UTC</pubDate>
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      <item>
         <title>Sanidina (K,Na)(Si,Al)4O8</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218363796</link>
         <description><![CDATA[<ul><li>ÍGNEO</li></ul><div>TECTOSILICATO/FELDESPATO<br>Es la Ortoclasa de las rocas Ígneas extrusivas. Es un mineral del grupo de los feldespatos, especifícamente a los feldespatos alcalinos.<br><br>Su propiedad diagnóstica es la macla Carlsbald que presenta bien formada. Suele ser euhedral.<br><br></div><pre>http://www.alexstrekeisen.it/pluto/feldspati.php

http://www.alexstrekeisen.it/pluto/feldspatialcalini.php</pre><div><br><br></div>]]></description>
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         <pubDate>2022-06-12 01:58:54 UTC</pubDate>
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      <item>
         <title>Muestras de microscopio</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218364140</link>
         <description><![CDATA[<div>Cuarzo con Moscovita 4x N//</div>]]></description>
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         <pubDate>2022-06-12 02:00:43 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218364320</link>
         <description><![CDATA[<div>Cuarzo con Moscovita 4x NX</div>]]></description>
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         <pubDate>2022-06-12 02:01:13 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218364594</link>
         <description><![CDATA[<div>Cuarzo 4x N//</div>]]></description>
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         <pubDate>2022-06-12 02:02:48 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218364767</link>
         <description><![CDATA[<div>Cuarzo 4x NX</div>]]></description>
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         <pubDate>2022-06-12 02:03:39 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218365094</link>
         <description><![CDATA[<div>Cristal de cuarzo grande que creció alrededor de los granos de plagiocalsa y ortoclasa. 4x NX</div>]]></description>
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         <pubDate>2022-06-12 02:05:03 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218365246</link>
         <description><![CDATA[<div>Gran cristal de cuarzo que creció al rededor de los demás minerales. 4x N//</div>]]></description>
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         <pubDate>2022-06-12 02:05:37 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218365837</link>
         <description><![CDATA[<div>Clorita bien formada con Calcita 4x N//</div>]]></description>
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         <pubDate>2022-06-12 02:07:22 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218366725</link>
         <description><![CDATA[<div>Clorita 4x N//</div>]]></description>
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         <pubDate>2022-06-12 02:10:53 UTC</pubDate>
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      <item>
         <title>Muestras de microscopio </title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218371821</link>
         <description><![CDATA[<div>Ortoclasa con Biotita 4x N//</div>]]></description>
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         <pubDate>2022-06-12 02:31:03 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218371821</guid>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218372252</link>
         <description><![CDATA[<div>Ortoclasa con Biotita 4x NX</div>]]></description>
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         <pubDate>2022-06-12 02:33:04 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218372252</guid>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218372954</link>
         <description><![CDATA[<div>Ortoclasa con Hornblenda y Biotita 4x NX</div>]]></description>
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         <pubDate>2022-06-12 02:36:15 UTC</pubDate>
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         <description><![CDATA[<ul><li>ÍGNEO-METAMÓRFICO-RARO SEDIMENTARIO</li></ul><div>TECTOSILICATO/FELDESPATO<br>La plagioclasa es un feldespato que varía su composición cálcica o sódica según la serie de cristalización de Bowen.<br>En el lado derecho de la serie continua se encuentran en el siguiente orden.<br><br>Anortita (Ca)<br>Bitownita<br>Labradorita<br>Andesina<br>Oligoclasa<br>Albita (Na)<br><br>La propiedad diagnóstica de la plagioclasa es la macla polisintetica o Carlsbald cuando está mezclada con la polisintetica.<br>Entre sus variaciones puede presentarse la plagioclasa zonada que es el momento en el cual cambia de composición de cálcica a sódica y de ahí origina la macla.<br><br>Para determinar el tipo de plagioclasa se realiza una prueba de ángulo de extinción:<br><br>1. Se coloca la plagioclasa en el punto en el que no se vea visible la macla (ni la clara, ni la oscura) en este punto se verá toda del mismo color.<br>2. Se toma el dato del ángulo en este punto.<br>3. Se gira la platina a la derecha y se busca la máxima extinción (negro) de las maclas que comiencen a oscurecerce.&nbsp;<br>4. Se toma el dato del ángulo en este punto.<br>5. Se repite el punto 3. Pero para la izquierda.<br>6. Se toma el dato del ángulo en este punto.<br>7. Se realiza la resta de los datos de los lados con el primer dato.<br>8. Para que el ejercicio funcione los datos que de la resta no pueden tener una diferencia superior a 6 grados.<br>9. Se busca en la tabla de ángulos a que plagioclasa corresponde.<br>10. Se realiza el ejercicio al menos unas 6 veces en diferentes partes de la sección delgada.<br><br>OTROS DATOS: La presencia de zonaciones es muy común, sobre todo en plagioclasas ígneas. El maclado puede faltar en rocas metamórficas. Alteración muy frecuente a sericítica (como en los feldespatos alcalinos, dando aspecto sucio), en función de la composición podemos tener como productos de alteración: montmorillonita, sericita, escapolita, prehnita, zeolitas, calcita, etc. La albita de alta temperatura o “albita alta” (propia de rocas volcánicas) presenta índices de refracción ligeramente más bajos, es biáxica (-) con un 2V de 50o<br><br>ASOCIACIÓN: Los términos más cálcicos son componente mayoritarios de lavas básicas e intermedias (gabros, basaltos y dioritas). Los términos más sódicos se dan en rocas más ácidas (granitos, granodioritas y pegmatitas). También en rocas alcalinas con feldespatoides, etc. Además se encuentran en rocas metamórficas (gneises y esquistos), hidrotermales y en sedimentarias (más raro, como cristales autigénicos). Las plagioclasas son importantes en la clasificación de rocas.<br><br></div><pre>http://www.alexstrekeisen.it/pluto/feldspati.php

http://www.alexstrekeisen.it/pluto/plagioclasio.php</pre><div><br>&nbsp;<br><br></div>]]></description>
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         <pubDate>2022-06-12 23:23:04 UTC</pubDate>
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         <title>Muestras de microscopio </title>
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         <description><![CDATA[<div>Plagioclasa 4x N//</div>]]></description>
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         <description><![CDATA[<div>Plagioclasa 4x NX</div>]]></description>
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         <pubDate>2022-06-13 00:04:03 UTC</pubDate>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218831575</link>
         <description><![CDATA[<div>Plagioclasa 4x N//</div>]]></description>
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         <pubDate>2022-06-13 00:04:51 UTC</pubDate>
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         <description><![CDATA[<div>Plagioclasa 4x NX</div>]]></description>
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         <pubDate>2022-06-13 00:05:30 UTC</pubDate>
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         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218832168</link>
         <description><![CDATA[<div>Plagioclasa 4x N//</div>]]></description>
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         <pubDate>2022-06-13 00:06:15 UTC</pubDate>
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         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218832416</link>
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         <pubDate>2022-06-13 00:06:52 UTC</pubDate>
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         <description><![CDATA[<div>Plagioclasa zonada 4x NX</div>]]></description>
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         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218833596</link>
         <description><![CDATA[<div>Plagioclasa zonada 4x N//</div>]]></description>
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         <author>julianhernandezroca</author>
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         <description><![CDATA[<div>Plagioclasa zonada 4x N//</div>]]></description>
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         <pubDate>2022-06-13 00:09:46 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218882618</link>
         <description><![CDATA[<div>Plagioclasas bien definidas N//</div>]]></description>
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         <pubDate>2022-06-13 01:11:55 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218883331</link>
         <description><![CDATA[<div>Plagioclasas bien definidas NX</div>]]></description>
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         <pubDate>2022-06-13 01:12:34 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218884594</link>
         <description><![CDATA[<div>Plagiocalsa roca intrusiva NX</div>]]></description>
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         <pubDate>2022-06-13 01:13:23 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218885292</link>
         <description><![CDATA[<div>Plagioclasa bien definida N//</div>]]></description>
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         <title>Clasificación de Feldespatos</title>
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         <description><![CDATA[<div>FELDESPATOS ALCALINOS:</div><ul><li>Ortoclasa (Feldespato Potásico).</li><li>Microclina (Feldespato potásico).</li><li>Sanidina (Feldespato potásico).</li><li>Sanidina sódica.</li><li>Anortoclasa sódica.</li><li>Pertitas (Feld.K + Feld. Na). Pueden ser pertitas (K&gt;Na), mesopertitas (K~Na), antipertita (K&lt;Na).</li><li>Albita (plagioclasa sódica).</li></ul><div>FELDESPATOS SÓDICOS Y CÁLCICOS:</div><ul><li>Plagioclasa Albita. (Na)</li><li>Plagioclasa Oligoclasa.</li><li>Plagioclasa Andesina.</li><li>Plagioclasa Labradorita.</li><li>Plagioclasa Bitownita.</li><li>Plagioclasa Anortita. (Ca)</li></ul><div><br></div>]]></description>
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         <pubDate>2022-06-13 01:40:38 UTC</pubDate>
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         <title>Clasificación de plagioclasa</title>
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         <description><![CDATA[<div>Plagioclasa N//</div>]]></description>
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         <description><![CDATA[<div>Plagioclasa NX</div>]]></description>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218948208</link>
         <description><![CDATA[<div>Plagioclasa N//</div>]]></description>
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         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218948731</link>
         <description><![CDATA[<div>Plagioclasa NX</div>]]></description>
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         <pubDate>2022-06-13 02:16:44 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218949397</link>
         <description><![CDATA[<div>Plagioclasa alterada N//</div>]]></description>
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         <pubDate>2022-06-13 02:17:21 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218949966</link>
         <description><![CDATA[<div>Plagioclasa alterada NX</div>]]></description>
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         <pubDate>2022-06-13 02:17:50 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218950470</link>
         <description><![CDATA[<div>Plagioclasa zonada N//</div>]]></description>
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         <pubDate>2022-06-13 02:18:21 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218950936</link>
         <description><![CDATA[<div>Plagioclasa zonada NX</div>]]></description>
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         <pubDate>2022-06-13 02:18:47 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218952070</link>
         <description><![CDATA[<div>Cuarzo</div>]]></description>
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         <pubDate>2022-06-13 02:19:56 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218952734</link>
         <description><![CDATA[<div>Ortoclasa</div>]]></description>
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         <pubDate>2022-06-13 02:20:33 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218953203</link>
         <description><![CDATA[<div>Sanidina</div>]]></description>
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         <pubDate>2022-06-13 02:21:01 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218954413</link>
         <description><![CDATA[<div>Plagioclasa</div>]]></description>
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         <pubDate>2022-06-13 02:22:10 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218954816</link>
         <description><![CDATA[<div>Plagioclasa</div>]]></description>
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         <pubDate>2022-06-13 02:22:37 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218955717</link>
         <description><![CDATA[<div>Microcuarzo</div>]]></description>
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         <pubDate>2022-06-13 02:23:29 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218968125</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-06-13 02:35:25 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218968625</link>
         <description><![CDATA[<div>Siderita</div>]]></description>
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         <pubDate>2022-06-13 02:35:58 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218970599</link>
         <description><![CDATA[<div>Siderita N//</div>]]></description>
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         <pubDate>2022-06-13 02:37:59 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218970920</link>
         <description><![CDATA[<div>Siderita NX</div>]]></description>
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         <pubDate>2022-06-13 02:38:20 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218971256</link>
         <description><![CDATA[<div>Siderita NX</div>]]></description>
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         <pubDate>2022-06-13 02:38:44 UTC</pubDate>
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         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218971562</link>
         <description><![CDATA[<div>Siderita N//</div>]]></description>
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         <pubDate>2022-06-13 02:39:06 UTC</pubDate>
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      <item>
         <title>Apatito Ca5(PO4)3(F,OH,Cl) (Ca,Va,Sr,PB)5(PO4,CO3)3(F,OH,Cl)</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2218997408</link>
         <description><![CDATA[<ul><li>ACCESORIO ÍGNEO Y METAMÓRFICO</li></ul><div>FOSFATO<br>El apatito es un mineral que normalmente se ve como agregados euhedrales y incluidos en otro minerales como el cuarzo, la ortoclasa, entre otros.<br><br>Se reconoce por su forma prismático, ser de tamaño de agregados, color de interferencia de primer orden, color natural incoloro.<br><br>ASOCIACIÓN: Como accesorio en la mayor parte de las rocas ígneas y metamórficas.<br><br></div><pre>http://www.alexstrekeisen.it/pluto/apatite.php</pre><div><br></div>]]></description>
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         <pubDate>2022-06-13 03:05:45 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219020994</link>
         <description><![CDATA[<div>Apatito 4x N//</div>]]></description>
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         <pubDate>2022-06-13 03:33:10 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219022340</link>
         <description><![CDATA[<div>Apatito 10x N//</div>]]></description>
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         <pubDate>2022-06-13 03:34:34 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219022714</link>
         <description><![CDATA[<div>Apatito 10x NX</div>]]></description>
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         <pubDate>2022-06-13 03:35:05 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219023162</link>
         <description><![CDATA[<div>Apatito N//</div>]]></description>
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         <pubDate>2022-06-13 03:35:38 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219023162</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219023455</link>
         <description><![CDATA[<div>Apatito NX</div>]]></description>
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         <pubDate>2022-06-13 03:36:03 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219024073</link>
         <description><![CDATA[<div>Apatito prismatico y acicular N//</div>]]></description>
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         <pubDate>2022-06-13 03:36:38 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219024365</link>
         <description><![CDATA[<div>Apatito prismatico y acicular NX</div>]]></description>
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         <pubDate>2022-06-13 03:37:01 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219024365</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219024867</link>
         <description><![CDATA[<div>Apatito acicular N//</div>]]></description>
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         <pubDate>2022-06-13 03:37:40 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219025150</link>
         <description><![CDATA[<div>Apatito acicular NX</div>]]></description>
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         <pubDate>2022-06-13 03:38:04 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219025668</link>
         <description><![CDATA[<div>Apatito azul N//</div>]]></description>
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         <pubDate>2022-06-13 03:38:27 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219025890</link>
         <description><![CDATA[<div>Apatito NX</div>]]></description>
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         <pubDate>2022-06-13 03:38:46 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219026499</link>
         <description><![CDATA[<div>Apatito N//</div>]]></description>
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         <pubDate>2022-06-13 03:39:06 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219027017</link>
         <description><![CDATA[<div>Apatito NX</div>]]></description>
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         <pubDate>2022-06-13 03:39:33 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219027995</link>
         <description><![CDATA[<div>Apatito prismatico y acicular</div>]]></description>
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         <pubDate>2022-06-13 03:40:33 UTC</pubDate>
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      </item>
      <item>
         <title>Pertita</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219032363</link>
         <description><![CDATA[<pre>http://www.alexstrekeisen.it/pluto/lamellare.php</pre>]]></description>
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         <pubDate>2022-06-13 03:46:08 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219032363</guid>
      </item>
      <item>
         <title>Anortoclasa (Na,K)AlSi3O8</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219040475</link>
         <description><![CDATA[<ul><li>ÍGNEO</li></ul><div>TECTOSILICATO/FELDESPATO<br>La anortoclasa es un Feldespato potásico que es muy característico gracias a su macla periclina (propiedad diagnóstica).<br><br></div><pre>http://www.alexstrekeisen.it/pluto/feldspati.php</pre><div><br></div>]]></description>
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         <pubDate>2022-06-13 03:57:26 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219040475</guid>
      </item>
      <item>
         <title>Microclina KAlSi3O8</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219042162</link>
         <description><![CDATA[<ul><li>ÍGNEO-RARO METAMÓRFICO Y SEDIMENTARIO</li></ul><div>TECTOSILICATO/FELDESPATO<br>Un Feldespato potásico que si identifica claramente por su macla enrejada. Se diferencia de la anortoclasa puesto que la anortoclasa las maclas no llegan a completarse hasta el final del mineral.&nbsp;<br><br>OTROS DATOS: Comúnmente pertítica (exsoluciones de plagioclasa). Alteración a sericita (cristales muy pequeños de minerales de la arcilla, a veces ultramicroscópicos, dando aspecto sucio)<br><br>ASOCIACIÓN: Rocas ígneas generalmente ácidas: como granitos, granodioritas y sienitas. Es un constituyente mayoritario de las pegmatitas. También se encuentra en sienitas nefelínicas (con feldespatoides). En rocas con metamorfismo regional de alto grado como gneises ácidos. Puede aparecer como mineral detrítico en rocas sedimentarias inmaduras, o bien como mineral autigénico<br><br><br></div><pre>http://www.alexstrekeisen.it/pluto/feldspati.php</pre>]]></description>
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         <pubDate>2022-06-13 04:00:15 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219042162</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219046783</link>
         <description><![CDATA[<div>Microclina 4x N//</div>]]></description>
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         <pubDate>2022-06-13 04:07:36 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219046783</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219047107</link>
         <description><![CDATA[<div>Microclina 4x NX</div>]]></description>
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         <pubDate>2022-06-13 04:08:06 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219047107</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219047725</link>
         <description><![CDATA[<div>Microclina 4x N//</div>]]></description>
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         <pubDate>2022-06-13 04:09:03 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219048123</link>
         <description><![CDATA[<div>Microclina 4x NX</div>]]></description>
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         <pubDate>2022-06-13 04:09:43 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219048604</link>
         <description><![CDATA[<div>Microclina N//</div>]]></description>
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         <pubDate>2022-06-13 04:10:27 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219048604</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219048867</link>
         <description><![CDATA[<div>Microclina NX</div>]]></description>
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         <pubDate>2022-06-13 04:10:50 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219048867</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219049080</link>
         <description><![CDATA[<div>Microclina N//</div>]]></description>
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         <pubDate>2022-06-13 04:11:09 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219049080</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219049292</link>
         <description><![CDATA[<div>Microclina NX</div>]]></description>
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         <pubDate>2022-06-13 04:11:28 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219049292</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219050024</link>
         <description><![CDATA[<div>Microclina alterada a sericita N//</div>]]></description>
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         <pubDate>2022-06-13 04:12:39 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219050024</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219050418</link>
         <description><![CDATA[<div>Microclina NX</div>]]></description>
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         <pubDate>2022-06-13 04:13:15 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219050418</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219050796</link>
         <description><![CDATA[<div>Microclina anteranda N//</div>]]></description>
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         <pubDate>2022-06-13 04:13:48 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219050796</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219051039</link>
         <description><![CDATA[<div>Microclina NX</div>]]></description>
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         <pubDate>2022-06-13 04:14:09 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219051039</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219052487</link>
         <description><![CDATA[<div>Anortoclasa 4x N//</div>]]></description>
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         <pubDate>2022-06-13 04:16:18 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219052487</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219052837</link>
         <description><![CDATA[<div>Anortoclasa 4x NX</div>]]></description>
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         <pubDate>2022-06-13 04:16:49 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219052837</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219053930</link>
         <description><![CDATA[<div>La macla que le corresponde a la anortoclasa es la periclina o en su defecto enrejada incompleta. Aunque a veces puede presentar las mismas de la plagioclasa siempre entre ellas estará presente la macla periclina o enrejada incompleta.</div>]]></description>
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         <pubDate>2022-06-13 04:18:24 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219053930</guid>
      </item>
      <item>
         <title>Maclas de la plagioclasa</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219066244</link>
         <description><![CDATA[<div>La plagioclasa puede tener macla polisintetica de la Albita (nombre que se le da a la macla de las plagioclasas) y macla Carlsbald-Albita que es la macla múltiple de las dos anteriores.</div>]]></description>
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         <pubDate>2022-06-13 04:34:45 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219066244</guid>
      </item>
      <item>
         <title>Macla de la Sanidina</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219067820</link>
         <description><![CDATA[<div>La macla de la Sanidina es únicamente la Carlsbad</div>]]></description>
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         <pubDate>2022-06-13 04:36:48 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219067820</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219070281</link>
         <description><![CDATA[<div>Anortoclasa N//</div>]]></description>
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         <pubDate>2022-06-13 04:39:22 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219070774</link>
         <description><![CDATA[<div>Anortoclasa con macla enrejada incompleta NX</div>]]></description>
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         <pubDate>2022-06-13 04:39:52 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219070774</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219071266</link>
         <description><![CDATA[<div>Anortoclasa con mayor aumento N//</div>]]></description>
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         <pubDate>2022-06-13 04:40:17 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219071266</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219071605</link>
         <description><![CDATA[<div>Anortoclasa con macla enrejada incompleta con mayor aumento NX</div>]]></description>
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         <pubDate>2022-06-13 04:40:45 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219073933</link>
         <description><![CDATA[<div>Anortoclasa</div>]]></description>
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         <pubDate>2022-06-13 04:43:31 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219074644</link>
         <description><![CDATA[<div>Microclina</div>]]></description>
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         <pubDate>2022-06-13 04:44:25 UTC</pubDate>
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      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219096525</link>
         <description><![CDATA[<div>Maclas y Feldespatos</div>]]></description>
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         <pubDate>2022-06-13 05:09:45 UTC</pubDate>
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      </item>
      <item>
         <title>Forma de los cristales</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219157994</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-06-13 06:18:26 UTC</pubDate>
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      </item>
      <item>
         <title>Forma de los cristales</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219158287</link>
         <description><![CDATA[]]></description>
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         <pubDate>2022-06-13 06:18:46 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219164635</link>
         <description><![CDATA[<div>Clorita moderadamente cristalizada 10x N//</div>]]></description>
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         <pubDate>2022-06-13 06:25:42 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219164635</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219165549</link>
         <description><![CDATA[<div>Clorita moderadamente cristalizada 10x NX</div>]]></description>
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         <pubDate>2022-06-13 06:26:33 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219165549</guid>
      </item>
      <item>
         <title>Muestras de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219403861</link>
         <description><![CDATA[<div>Granate en Esquisto (Vinotinto a rojo anaranjado)</div>]]></description>
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         <pubDate>2022-06-13 11:01:14 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219403861</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219404814</link>
         <description><![CDATA[<div>Granate en Esquisto</div>]]></description>
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         <pubDate>2022-06-13 11:02:34 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219404814</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219405233</link>
         <description><![CDATA[<div>Eclogita, Zoisita y Granate (rojo anaranjado)</div>]]></description>
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         <pubDate>2022-06-13 11:03:07 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219405233</guid>
      </item>
      <item>
         <title>Muestras de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219406654</link>
         <description><![CDATA[<div>Leucita (blanco euhedral) en Foidita</div>]]></description>
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         <pubDate>2022-06-13 11:04:53 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219406654</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219407088</link>
         <description><![CDATA[<div>Leucita en Foidita</div>]]></description>
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         <pubDate>2022-06-13 11:05:32 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219407088</guid>
      </item>
      <item>
         <title>Muchas de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219408676</link>
         <description><![CDATA[<div>Sienita nefelina del complejo intrusivo de Tanguá, Estado de Río de Janeiro, Brasil (Motoki et al., 2011a) Sodalita</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/4ab410867edfbd68c115567dfd918f36/padlet_image_picker_file_1147e995_696f_4b58_af7c_7a431ace3a0d.jpg" />
         <pubDate>2022-06-13 11:07:40 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219408676</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219412306</link>
         <description><![CDATA[<div>Sienita Nefelinica con Sodalita (Azul)</div>]]></description>
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         <pubDate>2022-06-13 11:12:49 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219412306</guid>
      </item>
      <item>
         <title>Muestra de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219414989</link>
         <description><![CDATA[<div>Roca de Halita</div>]]></description>
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         <pubDate>2022-06-13 11:16:45 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219414989</guid>
      </item>
      <item>
         <title>Muestra de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219417522</link>
         <description><![CDATA[<div>Fluorita = morado</div>]]></description>
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         <pubDate>2022-06-13 11:20:14 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219417522</guid>
      </item>
      <item>
         <title>Muestra de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219421375</link>
         <description><![CDATA[<div>Fosforita de pellets</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/749f6d7f67d72a4bab1baa6fedfabe1d/padlet_image_picker_file_10ada4d4_8bba_45a9_bc74_617645784652.jpg" />
         <pubDate>2022-06-13 11:25:13 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219421375</guid>
      </item>
      <item>
         <title>Muestras de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219422728</link>
         <description><![CDATA[<div>Ópalo orgánico</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/89c48d9621983962a5552b69d5212535/padlet_image_picker_file_8e8c3511_2c4b_48e0_a8fa_706e64a12b5c.jpg" />
         <pubDate>2022-06-13 11:27:01 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219422728</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219424370</link>
         <description><![CDATA[<div>Ópalo inorgánico</div>]]></description>
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         <pubDate>2022-06-13 11:29:05 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219424370</guid>
      </item>
      <item>
         <title>Muestras de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219429862</link>
         <description><![CDATA[<div>Basalto</div>]]></description>
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         <pubDate>2022-06-13 11:36:27 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219429862</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219430157</link>
         <description><![CDATA[<div>Pumita</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/4662632d7144533dff4b308b13db5133/padlet_image_picker_file_de200e5c_8a1c_4a9b_b595_a7d6a0bc8a3a.jpg" />
         <pubDate>2022-06-13 11:36:54 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219430157</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219430868</link>
         <description><![CDATA[<div>Andesita</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/a6d8296a7f327912e8851b1d937ec39a/padlet_image_picker_file_1d41adff_0120_4713_9eda_e33da336d340.jpg" />
         <pubDate>2022-06-13 11:37:49 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219430868</guid>
      </item>
      <item>
         <title>Muestras de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219435960</link>
         <description><![CDATA[<div>Clorita = verde</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/762435740423dd4b5088862d828af9f5/padlet_image_picker_file_4a02c9c5_e4fb_428e_9122_b5505b08c3f0.jpg" />
         <pubDate>2022-06-13 11:44:10 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219435960</guid>
      </item>
      <item>
         <title>Muestra de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219437119</link>
         <description><![CDATA[<div>Pegmatita (moscovita=plateado)</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/f015c2ed4020fce5c15eb842bac7b59a/padlet_image_picker_file_a766819f_ebbc_4f49_a68d_7e5c9644117d.jpg" />
         <pubDate>2022-06-13 11:45:34 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219437119</guid>
      </item>
      <item>
         <title>Muestra de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219439048</link>
         <description><![CDATA[<div>Roca granitica (Biotita=negro perlado).</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/0cf15713e7b97e692ab436140cdb301a/padlet_image_picker_file_f82fa0cc_fecd_447d_8f38_f237aa9799d7.webp" />
         <pubDate>2022-06-13 11:47:56 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219439048</guid>
      </item>
      <item>
         <title>Muestras de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219446944</link>
         <description><![CDATA[<div>Diorita (hornblenda=negro)</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/004207162ecabcfc5a2abf0b5ca9e31e/padlet_image_picker_file_68cd5d5e_2a30_444f_9573_00cf6c2cefb3.jpg" />
         <pubDate>2022-06-13 11:57:42 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219446944</guid>
      </item>
      <item>
         <title>Muestras de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219453541</link>
         <description><![CDATA[<div>Tremolita =blanco</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/becfa85e5b71501813aba95ec14fc869/padlet_image_picker_file_f89ceced_6402_4d18_93d8_e9ad33f6aa7d.jpg" />
         <pubDate>2022-06-13 12:05:15 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219453541</guid>
      </item>
      <item>
         <title>Muestra de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219461779</link>
         <description><![CDATA[<div>Glaucofana = Azul oscuro grisáceo.</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/9d066c162fc75412b464af1d433c552a/padlet_image_picker_file_4a7500a2_a3f5_4bdd_b392_1d54a81cbfd2.jpg" />
         <pubDate>2022-06-13 12:14:45 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219461779</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219475264</link>
         <description><![CDATA[<div>Esquisto azules con Granate (Glaucofana=Azul)</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/44777fe9875601ebfc39aca0833d197c/padlet_image_picker_file_e8b7eefb_1a25_4c16_99f2_bec054dee31b.jpg" />
         <pubDate>2022-06-13 12:28:57 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219475264</guid>
      </item>
      <item>
         <title>Muestra de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219480041</link>
         <description><![CDATA[<div>Gabro (piroxeno y Hornblenda= negro)</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/c17b522f06eb703389da5a9d60f24749/padlet_image_picker_file_4f4366ef_65b2_4a1c_b8e8_da3ea76b8ea0.jpg" />
         <pubDate>2022-06-13 12:33:49 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219480041</guid>
      </item>
      <item>
         <title>Muestra de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219481999</link>
         <description><![CDATA[<div>Gabro (piroxeno y Hornblenda = negro)</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/6d931a23a5fc25d522ac8d90c79f894e/padlet_image_picker_file_7d80e3d7_7d2d_42a1_b8d4_59ed0b1c8fa8.jpg" />
         <pubDate>2022-06-13 12:35:30 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219481999</guid>
      </item>
      <item>
         <title>Muestras de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219488013</link>
         <description><![CDATA[<div>Dunita (roca de olivinos)</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/79fd87ca5e44a2212316d73cc93fcdd0/padlet_image_picker_file_2776eb79_e9da_4cdc_8269_6dd1be6cbf6a.jpg" />
         <pubDate>2022-06-13 12:40:16 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219488013</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219490792</link>
         <description><![CDATA[<div>Basalto (Olivino = verde)</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/e0fbf9f614882dbfb4e38fb9a0bb57c1/padlet_image_picker_file_e3c35298_dafe_4824_96a9_11720976c8a4.jpg" />
         <pubDate>2022-06-13 12:42:40 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219490792</guid>
      </item>
      <item>
         <title>Muestras de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219493269</link>
         <description><![CDATA[<div>Circones grandes</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/335489a4c958d62ca84716832c32411c/padlet_image_picker_file_9e1f22e0_2e8c_4d6a_8501_8264c46ceed9.jpg" />
         <pubDate>2022-06-13 12:44:49 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219493269</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219495160</link>
         <description><![CDATA[<div>Circón tamaños más representativos en las diferentes rocas.</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/771bd2c77e024a1192f2a8920fa185f0/padlet_image_picker_file_31bafac1_c1b4_49b4_a9e0_5cbf0e99c2e4.png" />
         <pubDate>2022-06-13 12:46:30 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219495160</guid>
      </item>
      <item>
         <title>Muestra de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219501217</link>
         <description><![CDATA[<div>Titanita = rojo</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/f31eb1c31a5bff4487913c318f389f8e/padlet_image_picker_file_fefcee9f_9f40_432d_9e49_bf08e4a78c29.jpg" />
         <pubDate>2022-06-13 12:52:14 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219501217</guid>
      </item>
      <item>
         <title>Muestra de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219504223</link>
         <description><![CDATA[<div>Epidota = verde</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/3f6dbed496d6af610ae17174969b3f71/padlet_image_picker_file_d30c3d06_5140_478a_bac9_f64389d4a1ec.jpg" />
         <pubDate>2022-06-13 12:55:02 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219504223</guid>
      </item>
      <item>
         <title>Muestra de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219508932</link>
         <description><![CDATA[<div>Turmalina = morado</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/e7fe2d1c1b56fc97e1323ed86f84e43b/padlet_image_picker_file_b7c0e53f_a656_4dd2_9cec_87d05cc979b8.jpg" />
         <pubDate>2022-06-13 12:59:02 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219508932</guid>
      </item>
      <item>
         <title>Muestras de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219514652</link>
         <description><![CDATA[<div>Conglomerado (cuarzo=granos grandes de diferentes colores)</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1670170403/5a9de68f73eff2594685524e67bae177/padlet_image_picker_file_93765b7c_8558_4da9_8f46_b78eff74e0dd.jpg" />
         <pubDate>2022-06-13 13:04:16 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219514652</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219516037</link>
         <description><![CDATA[<div>Arenisca (para este caso toda es de cuarzo tamaño arena)</div>]]></description>
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         <pubDate>2022-06-13 13:05:34 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219517442</link>
         <description><![CDATA[<div>Cuarcita (todo es cuarzo)</div>]]></description>
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         <pubDate>2022-06-13 13:06:44 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219519121</link>
         <description><![CDATA[<div>Gneis (cuarzo y Feldespatos = blanco)</div>]]></description>
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         <pubDate>2022-06-13 13:08:13 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2219521559</link>
         <description><![CDATA[<div>Granito (cuarzo = blanco)</div>]]></description>
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         <pubDate>2022-06-13 13:10:09 UTC</pubDate>
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      </item>
      <item>
         <title>Macla, Hábito y Forma</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2222274150</link>
         <description><![CDATA[<div><strong>•Macla:</strong> La cristalización del mismo mineral regida por los ejes, centro o planos.<br>Para profundizar en el tema:<br>En el apartado de archivos generales, quinto archivo.</div><ol><li>Polisintetica (Albita).</li><li>Carlsbad.</li><li>Carlsbad-Albita.</li><li>Multidireccional.</li><li>Cíclica.</li><li>Penetración.</li><li>Enrejada.</li><li>Periclina.</li><li>Lamelar.</li><li>Simple.</li></ol><pre>https://www.ehu.eus/mineralogiaoptica/maclas.html</pre><div><br><strong>•Hábito y forma: </strong>Para profundizar en el tema en archivos generales el tercer, noveno y décimo archivo.</div><ol><li>Euhedral: las caras bien cristalizadas (definidas y claras).</li><li>Subhedral: Algunas caras bien cristalizadas.</li><li>Anhedral: Ninguna cara bien cristalizada.</li></ol><pre>https://www.ehu.eus/mineralogiaoptica/forma-y-habito.html</pre><div><br></div>]]></description>
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         <pubDate>2022-06-15 19:10:30 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2222274150</guid>
      </item>
      <item>
         <title>Minerales de las rocas ígneas </title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2233947103</link>
         <description><![CDATA[<div>Los minerales de las rocas ígneas son todos aquellos minerales formados por la cristalización del magma. Este magma varía en su composición dependiendo su lugar de formación (ambientes geotécnicos) y la profundidad (temperatura y presión). Los minerales formadores de las rocas Ígneas son todos aquellos que se rigen por una serie de cristalización llamada la "serie de cristalización de Bowen".</div>]]></description>
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         <pubDate>2022-06-30 04:06:26 UTC</pubDate>
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      </item>
      <item>
         <title>Minerales Formadores de las rocas Ígneas </title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2233948371</link>
         <description><![CDATA[<div><strong>Serie Continua de la serie de Bowen:</strong><br><br>Pertenecen las Plagioclasas (Feldespatos Sódicos y Cálcicos).<br><br>PLAGIOCLASAS:<br>Ca+</div><ol><li>Anortita</li><li>Bytownita</li><li>Labradorita</li><li>Andesina</li><li>Oligoclasa</li><li>Albita</li></ol><div>Na+<br><br>Tectosilicatos triclinicos que alteran a Sericita (sódicas) y a Sericita y Clorita (Cálcicas).</div><div><br>La Albita junto con los Feldespatos potásicos forman los Feldespatos alcalinos. Pueden presentar desmezclas con el cuarzo (Mirmequítica), el piroxeno (ofitica), entre otros.<br><br><br><strong>Serie discontinua de la serie de Bowen:</strong>&nbsp;<br><br>Pertenecen los minerales Maficos, los Feldespatos potásicos, el Cuarzo, Feldespatoides y micas.<br><br>MAFICOS:<br>También llamados minerales ferromagnesianos.</div><ol><li>Olivino</li><li>Piroxeno</li><li>Anfiboles</li><li>Biotita</li></ol><div>Los olivinos, piroxenos y anfiboles son grupos de minerales.<br><br><strong>Olivinos:</strong> Nesosilicatos rombicos que alteran a serpentina. Pertenece la fayalita y la forsterita.<br><br><strong>Piroxenos:</strong> Inosilicatos.</div><ul><li><strong>Clinopiroxenos:</strong> Monoclinicos. Pertenecen la Augita, Diopsido, Aegirina, Jadeita y Onfacita. Alteran a Hornblenda, Clorita y Biotita.</li><li><strong>Ortopiroxenos:</strong> Rombicos. Pertenecen la Enstatita, Ferrosilita y la Hiperstena. Alteran a Clorita y Serpentina.</li></ul><div><strong>Anfiboles: </strong>Inosilicatos Monoclinicos.</div><ul><li>Hornblenda: Altera a Clorita y Biotita.</li><li>Lamprobolita: también llamada Oxihornblenda, altera a Clorita y Biotita.</li></ul><div><strong>Biotita:</strong> Mica de los Filosilicatos Monoclinicos, altera a Clorita.<br><br><br><br><br><strong>Moscovita:</strong> Mica de los Filosilicatos Monoclinicos y Trigonales. No se altera.<br><br><br><br>TECTOSILICATOS:<br>Entre ellos los Feldespatos Potásicos, el Cuarzo, los Feldespatoides y las Plagioclasas (Feldespatos Cálcicos y Sódicos).&nbsp;<br><br>FELDESPATOS POTÁSICOS:</div><ol><li>Ortoclasa - Sanidina</li><li>Anortoclasa</li><li>Microclina&nbsp;</li></ol><div><strong>Ortoclasa: </strong>Feldespato potásico de los Tectosilicatos Monoclinicos, su equivalente extrusivo es la Sanidina. Altera a Sericita y Caolinita. La Sanidina puede presentar macla Carlsbad. Puede presentar desmezclas con el Cuarzo, en Intrusivas (Gráfica) en extrusivas (Esquelética).<br><br><strong>Anortoclasa:</strong> Feldespato potásico de los Tectosilicatos triclinicos, altera a Sericita. Aparece solo en la extrusivas. Presenta macla Periclina (2 direcciones).<br><br><strong>Microclina:</strong> Feldespato potásico de los Tectosilicatos triclinicos, altera a Sericita. Aparece solo en la Intrusivas. Presenta macla enrejada (múltiple). Puede presentar desmezclas con la Plagioclasa sódica (Periclina).<br><br><br>CUARZO: <br><strong>Cuarzo: </strong>Tectosilicatos Trigonales. No se altera, puede presentar desmezclas con la ortoclasa: en Intrusivas (Gráfica) en extrusivas (Esquelética). Y con la Plagioclasa (Mirmequítica).<br><br>FELDESPATOIDES:</div><ol><li>Nefelina</li><li>Sodalita</li><li>Leucita</li></ol>]]></description>
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         <pubDate>2022-06-30 04:08:14 UTC</pubDate>
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      </item>
      <item>
         <title>Minerales accesorios </title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234015633</link>
         <description><![CDATA[<div>Minerales que pertenecen a los Ciclosilicatos, Sorosilicatos y Nesosilicatos. Entre ellos también pueden estar los minerales opacos (Sulfuros, Óxidos y Metales).<br><br>ANISOTRÓPICOS E ISÓTROPICOS:<br><br>Titanita:<br>Granate:<br>Zircón:<br>Turmalina:<br>Apatito:<br><br>OPACOS:<br>Pirita<br>Hematita<br>Goethita<br>Limonita<br>Galena</div>]]></description>
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         <pubDate>2022-06-30 05:41:45 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234015633</guid>
      </item>
      <item>
         <title>Minerales de alteración o secundarios</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234017144</link>
         <description><![CDATA[<div>Los minerales formadores de rocas pueden alterar a estos minerales:<br><br></div><ol><li>Clorita</li><li>Serpentina</li><li>Calcita</li><li>Epidota</li><li>Caolinita</li><li>Sericita</li><li>Biotita</li><li>Hornblenda&nbsp;</li></ol><div>Clorita:<br>Serpentina:<br>Calcita:<br>Epidota:<br>Caolinita:<br>Sericita:</div>]]></description>
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         <pubDate>2022-06-30 05:44:22 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234017144</guid>
      </item>
      <item>
         <title>Minerales Opacos </title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234048094</link>
         <description><![CDATA[<div>Los minerales opacos son todos aquellos minerales que se encuentran en los sulfuros, óxidos y metales. Estos minerales tienen la particularidad que por su composición y estructura no permiten el paso de la luz transmitida (diafanidad opaca) por lo que <strong>no tendrán propiedades en ninguno de los dos Nicoles</strong> (Paralelos y Cruzados). La única manera de ver sus propiedades es por medio de <strong>luz reflejada.<br><br></strong>Entre los minerales opacos podemos agregar el carbón, que se puede observar también en probetas pulidas, igualmente con luz reflejada.<br><br>&nbsp;<br>En la imagen se observa la luz transmitida (usada en mineralogía Óptica para identificar minerales Isótropicos y Anisotrópicos) y la luz reflejada (usada para identificar minerales Opacos).<br><strong><br>*Diafanidad: </strong>Característica de un mineral que es la capacidad de permitir el paso de la luz atraves de el.</div>]]></description>
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         <pubDate>2022-06-30 06:32:11 UTC</pubDate>
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      </item>
      <item>
         <title>Muestras de mano</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234070012</link>
         <description><![CDATA[<div>Pegmatita (ortoclasa= rosado)</div>]]></description>
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         <pubDate>2022-06-30 07:02:41 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234070012</guid>
      </item>
      <item>
         <title>Muestras de mano </title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234070551</link>
         <description><![CDATA[<div>Riolita (sanidina=rosado)</div>]]></description>
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         <pubDate>2022-06-30 07:03:22 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234071359</link>
         <description><![CDATA[<div>Gneis (ortoclasa= blanco)</div>]]></description>
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         <pubDate>2022-06-30 07:04:27 UTC</pubDate>
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      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234072895</link>
         <description><![CDATA[<div>Granito (ortoclasa=rosado)</div>]]></description>
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         <pubDate>2022-06-30 07:06:29 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234072895</guid>
      </item>
      <item>
         <title>Muestras de mano </title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234073990</link>
         <description><![CDATA[<div>Granodiorita (Plagioclasas= blanco)</div>]]></description>
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         <pubDate>2022-06-30 07:08:10 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234073990</guid>
      </item>
      <item>
         <title></title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234077185</link>
         <description><![CDATA[<div>Andesita (Plagioclasas = blanco)</div>]]></description>
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         <pubDate>2022-06-30 07:12:58 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234077185</guid>
      </item>
      <item>
         <title>Muestras de mano </title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234078842</link>
         <description><![CDATA[<div>Aplita</div>]]></description>
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         <pubDate>2022-06-30 07:15:37 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234078842</guid>
      </item>
      <item>
         <title>Muestras de mano </title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234080818</link>
         <description><![CDATA[<div>Anortoclasa<em>&nbsp;</em></div>]]></description>
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         <pubDate>2022-06-30 07:19:09 UTC</pubDate>
         <guid>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/2234080818</guid>
      </item>
      <item>
         <title>Lente de Bertrand y signo óptico</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/3270725086</link>
         <description><![CDATA[<p>Para medir estas propiedades es necesario obtener visión conoscópica. Se consigue con el polarizador y el analizador cruzados a 90º, condensador de luz para obtener iluminación convergente y lente de Bertrand.&nbsp;Figura de interferencia: Se forma por procesos complejos de interferencia de ondas en el cristal. Permite distinguir el tipo óptico de un cristal (uniáxico o biáxico), determinar su signo óptico y medir el ángulo 2V. </p><p><br></p><p><br></p>]]></description>
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         <pubDate>2024-12-23 17:17:00 UTC</pubDate>
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      </item>
      <item>
         <title>Desmezclas y alteraciones</title>
         <author>julianhernandezroca</author>
         <link>https://padlet.com/julianhernandezroca/MinOpticaUPTC/wish/3270727052</link>
         <description><![CDATA[]]></description>
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         <pubDate>2024-12-23 17:22:05 UTC</pubDate>
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