Question

Which of the following is an example of non-metallic mineral?

• A. Mica
• B. Aluminum
• C. Cobalt
• D. Manganese

Answer 1

Answer: (A)

Mica

Mica - This is a group of sheet silicate (phyllosilicate) minerals includes several closely related materials having nearly perfect basal cleavage. All are monoclinic, with a tendency towards pseudohexagonal crystals, and are similar in chemical composition.

Aluminum - this is a metallic mineral.

Cobalt - This is a chemical element with symbol $Co$ and atomic number 27. Like nickel, cobalt is found in the Earth's crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal.

Manganese is a chemical element with symbol Mn and atomic number 25. is a metal.

Only non-metal is Mica.