Rock stuff by https://padlet.com/1368618/blml2yc61zg7 Made with panache en-us 2017-10-27 12:51:19 UTC 2017-10-27 13:33:27 UTC hello@padlet.com Quartz 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201170374
  • tightly bound silica formed
  • leaves no visible streak
  • colorless
  • glassy luster
  • seven on the hardness scale
    • ]]>     2017-10-27 12:53:06 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201170374     Feldspar 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201172676
  • white to grey
  • cleaves in two direction
  • vitreous, porcelain-like
  • six on the hardness scale


    • ]]>     2017-10-27 12:59:18 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201172676     Calcite 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201174272
  • three on the hardness scale
  • colorless to white
  • rhombohedral cleave (not 90 degrees)
  • three on the hardness scale

    • ]]>     2017-10-27 13:03:26 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201174272     Mica 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201175345
  • 2.5 on the hardness scale
  • flat crystals
  • cleave in one direction creating thin flakes or sheets
  • no visible streak
  • clear or generally dark color
    • ]]>     2017-10-27 13:06:07 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201175345     Pyrite 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201176977
  • 6.5 on the hardness scale
  • brassy yellow
  • green/black streak
  • cubic cleavage 
  • metallic luster
  • also known as fool's gold

    • ]]>     2017-10-27 13:10:26 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201176977     Magnetite 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201177420
  • 5.5 to 6.5 on the hardness scale
  • black to silver color
  • black streak
  • metallic luster
  • fractures
    • ]]>     2017-10-27 13:11:36 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201177420     Hematite 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201178014
  • 1 - 6.5 on the hardness scale
  • red to brown color
  • red to brown streak
  • fractures
  • non-metallic luster

    • ]]>     2017-10-27 13:13:13 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201178014     Galena 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201179343
  • 2.5 on the hardness scale
  • silver color
  • black/gray streak
  • metallic luster
  • fracture

    • ]]>     2017-10-27 13:16:35 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201179343     Graphite 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201179803 1 - 2 on the hardness scale
    grey color
    grey streak
    fracture
    metallic luster]]>     2017-10-27 13:17:39 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201179803     Sulfur 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201180096
  • yellow color
  • 2 on the hardness scale
  • fractures
  • yellow streak
  • non-metallic luster

    • ]]>     2017-10-27 13:18:26 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201180096     Pumice 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201181314
  • Extrusive
  • Felsic
  • White color
  • Vesicular texture
    • ]]>     2017-10-27 13:21:10 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201181314     Obsidian 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201182490
  • Extrusive
  • Glassy texture
  • Felsic 
  • Black color
    • ]]>     2017-10-27 13:23:39 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201182490     Granite 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201182839
  • Intrusive
  • Phaneritic 
  • Felsic
  • Light colored and speckled 
    • ]]>     2017-10-27 13:24:23 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201182839     Scoria 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201183724
  • Extrusive
  • Vesicular
  • Mafic
  • Dark color

    • ]]>     2017-10-27 13:26:06 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201183724     Gabbro 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201184210
  • Intrusive
  • Phaneritic
  • Mafic
  • Dark colored and speckled
    • ]]>     2017-10-27 13:27:11 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201184210     Basalt 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201184533
  • Extrusive
  • Fine-grained
  • Mafic
  • Dark grey color

    • ]]>     2017-10-27 13:27:58 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201184533     Rhyolite 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201185048
  • Extrusive
  • Vesicular
  • Felsic
  • Light pink/gray color
    • ]]>     2017-10-27 13:29:05 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201185048     Andesite 1368618 https://padlet.com/1368618/blml2yc61zg7/wish/201185677
  • Extrusive
  • Phaneritic
  • Andesitic
  • Grey color, lightly speckled

    • ]]>     2017-10-27 13:30:29 UTC https://padlet.com/1368618/blml2yc61zg7/wish/201185677