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Which mineral is flaky and black in appearance?

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in Engineering Geology by (962k points)
Which mineral is flaky and black in appearance?

(a) Biotite mica

(b) Muscovite mica

(c) Diamond

(d) Jaspar

This question was posed to me during an internship interview.

Question is from Formation and Descriptive Study of Minerals in section The Study of Minerals of Engineering Geology

1 Answer

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Correct choice is (a) Biotite mica

Easiest explanation: Biotite mica is flaky and black in appearance and appears in the form of thin sheets. They are usually translucent.

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