Discussing Minerals: Mica - Biotite \u0026 Muscovite

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Rock of the Week #2: BIOTITE

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Biotite Mica

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Biotite Mica

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#mica #lepidolite ? #biotite ? or #vermiculite #mascovite

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Crystal \u0026 Mineral Education: BIOTITE AKA BLACK MICA

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What is biotite? What are the features of biotite? How is biotite formed?

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Biotite is a common group of phyllosilicate minerals within the mica group

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Biotite Gemstone | Uses and Properties

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Secondary Biotite Alteration

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Biotite Mica Rock Collection

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6 Muscovite Biotite

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Biotite

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The Black Mica Mineral and its Uses

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What is H3O2 EZ structured water, Biotite and Black Mica?

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Geology! Biotite sample found!

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Biotite luster

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intro to mica

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secondary rough evaluation potassium feldspar with biotite mica

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