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What is the chemical formula for biotite mica that contains. potassium?

What is the chemical formula for biotite mica that contains. potassium?
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What is the chemical formula for biotite mica that contains. potassium?

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User Tawman
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1 Answer

4 votes
K(Mg,Fe) 3(AlSi 3O 10)(F,OH) 2. it’s a repeating unit though.
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User IMX
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