MetallurgyHard

Question

Which one of the following is a mineral of iron?

Options

A.Malachite
B.Cassiterite
C.Pyrolusite
D.Magnetite

Solution


Mineral                       Chemical composition
Malachite                    CuCO3Cu ( OH )2
Cassiterite                   SnO2
Pyrolusite                    MnO2
Magnetite                    Fe3 O4
Thus, Magnetite is a mineral of iron.

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