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Biotite crystals

shaman15771

shaman15771

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SW VIRGINIA
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fisher
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All Treasure Hunting
We have a lot of biotite (black mica). This specimen appears to have a crystal structure.

biotite 1.webpbiotite 2.webpbiotite 3.webp
 

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Rock with Blue Green or Green Blue. What is it?

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its a Kimberlite rock or something else ?

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