sample piece raw biotite genesis rock stone hand geologist nature background |
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navigate by keyword : background biotite black carbon close coal crystal crystalline diorite fossil found fuel gabbro genesis geologist geology granite gray hand igneous isolated macro material mine mineral natural nature object ore pegmatite peridotite piece range raw rock rockforming rocks rough sample specimen stone texture white wide |
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Biotite is a rock-forming mineral found in a wide range of crystalline igneous rocks such as granite, diorite, gabbro, peridotite, and pegmatite. |
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