Question:

Biotite is known as

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Biotite is black mica, while muscovite is white mica.
  • Brown mica
  • White mica
  • Red mica
  • Black mica
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The Correct Option is D

Solution and Explanation

Mica minerals occur in different varieties. Biotite is a dark coloured mica mineral. It contains iron and magnesium, which gives it a dark appearance. Because of its dark black or brownish-black colour, biotite is commonly called: \[ \text{Black mica}. \] Muscovite is commonly known as white mica. Therefore, biotite should not be confused with white mica. Thus, the correct answer is: \[ \text{Black mica}. \]
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