Pyrolusite is an ore/mineral of ___________.
A) Mercury B) Manganese C) Molybdenum D) Lead
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Answer:
B)
Explanation:
Pyrolusite is a mineral consisting essentially of manganese dioxide (MnO2) and is important as an ore of manganese. It is a black, amorphous appearing mineral, often with a granular, fibrous, or columnar structure, sometimes forming reniform crusts.
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