https://padlet.com/1613394/pkdhzn586yc7 18 rocks and minerals en-us 2017-10-30 17:58:17 UTC 2026-02-03 06:19:44 UTC hello@padlet.com 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201860398 Formed at the earths surface ]]> 2017-10-30 17:59:28 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201860398 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201860702 Formed inside of the earth]]> 2017-10-30 18:00:08 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201860702 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201861003 Formed by crystallization 
two types: intrusive (formed inside of the earth)  and extrusive (formed on the earths surface) 
Textures: Vesicular, glassy, aphanitic, phaneritic, 
Compositions: mafic/ basaltic, andesitic, felsic/granitic 
Rock features: Batholith, Dike, Sill, Pluton, Laccolith ]]> 2017-10-30 18:00:45 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201861003 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201863989 gas pockets]]> 2017-10-30 18:05:47 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201863989 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201864468 glassy]]> 2017-10-30 18:06:40 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201864468 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201864661 large, coarse mineral grains visible to the bare eye ]]> 2017-10-30 18:07:00 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201864661 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201865340 small (fine) mineral grains ]]> 2017-10-30 18:08:04 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201865340 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201865628 low density, light colors (except for obsidian), high silica, low iron and magnesium, lots of silica makes the rock stiff]]> 2017-10-30 18:08:39 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201865628 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201866095 dense, dark colored. High iron and magnesium, low silica. ]]> 2017-10-30 18:09:33 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201866095 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201866337 combonation of basaltic and granitic rocks. Many volcanos around the pacific ocean produce andesitic lava. ]]> 2017-10-30 18:09:59 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201866337 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201866738 Extrusive, vesicular, felsic 

]]> 2017-10-30 18:10:45 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201866738 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201868305 Extrusive, glassy, felsic ]]> 2017-10-30 18:13:44 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201868305 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201870122 Intrusive, phaneritic, Felsic ]]> 2017-10-30 18:16:43 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201870122 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201870759 Extrusive, vesicular, mafic ]]> 2017-10-30 18:17:51 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201870759 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201871220 Intrusive, phaneritic, mafic ]]> 2017-10-30 18:18:34 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201871220 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201871911 extrusive. aphanitic, mafic ]]> 2017-10-30 18:19:43 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201871911 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201872419 Extrusive, apathetic, felsic]]> 2017-10-30 18:20:33 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201872419 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201873634 extrusive, aphanitic, andesitic ]]> 2017-10-30 18:22:29 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201873634 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201874873 Non-metalic, 
white/tan 
Streak: white/none
cleavage 
less than 2.5 hardness ]]> 2017-10-30 18:24:22 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201874873 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201875951 non-metalic
clear
no streak 
clevage in 90 degree breaks
hardness between 2.5 and 3.5
 ]]> 2017-10-30 18:26:09 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201875951 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201877083 Non-metalic,
clearish
white streak
cleavage (rhombohedral) 
harder than 2.5 

]]> 2017-10-30 18:28:17 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201877083 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201878094 Metalic
grey
grey streak
cleavage 
harder than 2.5 softer than 3.5 

]]> 2017-10-30 18:29:55 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201878094 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201878682 metalic
grey/silver
grey streak
cleavage 
softer than 2.5 

]]> 2017-10-30 18:30:59 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201878682 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201879358 nonmetallic 
grey/purple 
no streak 
fracture
harder than everything (7)  

]]> 2017-10-30 18:32:16 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201879358 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201880233 nonmetallic 
light burgundy 
red/brown streak 
fracture 
softer than 2.5 ]]> 2017-10-30 18:33:58 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201880233 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201880796 nonmetallic 
clear
no streak
clevage
softer than 2.5 

]]> 2017-10-30 18:35:02 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201880796 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201881264 metallic 
orange/red/brown
no streak
fracture
harder than everything 

]]> 2017-10-30 18:36:03 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201881264 1613394 https://padlet.com/1613394/pkdhzn586yc7/wish/201882353 nonmetallic 
dark gray 
gray streak
clevage 
harder than glass 

]]> 2017-10-30 18:38:11 UTC https://padlet.com/1613394/pkdhzn586yc7/wish/201882353