which one of the following is a mineral of iron?

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Malachite

Cassiterite

Pyrolusite

Magnetite

answer is D.

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Detailed Solution

Malachite −CuCO3⋅Cu(OH)2, Cassiterite −SnO2 Pyrolusite −MnO2, Magnetite −Fe3O4Thus, magnetite is a mineral of iron.

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