Question

The mineral magnetite is generally black or dark gray, with a metallic luster. Which sample is most likely magnetite?

A.
A grayish dull piece of mineral.
B.
A white dull piece of mineral.
C.
A grayish lustrous piece of mineral.
D.
A black dull piece of mineral.

Answer 1

C

Magnetite is typically black or dark gray and has a metallic (shiny) luster. Choice C is grayish and lustrous, matching both color and luster.