where would this form ?

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Offline ghoust_ny

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where would this form ?
« on: 20/04/2011 19:28:55 »
found this today while searching for rocks for my tank it brakes into tiny pices and become like beach sand in my hand but its all the same textures inside out anyone know where this formed ? and how ? very shiny in the sunshine looks almost like a brick of shiny silver :D thought it would look good in my tank but i am not sure if i should place it in there











it brakes in my hand
« Last Edit: 20/04/2011 19:38:38 by ghoust_ny »

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Offline Bass

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where would this form ?
« Reply #1 on: 20/04/2011 19:42:11 »
Mica schist.  It's a metamorphic rock that forms when heat + pressure change clay-rich rocks into mica minerals.  The direction of maximum pressure is perpendicular to orientation of the mica.
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