Question

Why are all minerals are not ores but all ores are minerals?Give reason.

Answer 1

All ores are minerals while all minerals are not ores as some of them might have a large amount of unwanted substances such as sand, stones and earthly impurities. For example: Aluminium occurs in earth's crust in the form of two minerals bauxite and clay. Out of these, aluminium can be easily and profitably extracted from bauxite only. So, we can infer that bauxite is an ore of aluminium.On the other hand, it has not been possible to obtain aluminium from clay by some easy and cheap method. So, clay remains only as mineral and not as ore of aluminum.