DEFINE: ORE, MINERAL AND GANGUE

General Introduction OF Chapter|| Ores||Minerals||Gangue||Flux|| Types OF Metallurgy|| Types OF Ores||Steps involved in Extraction OF Metal

Introduction Mineral || Ore gangue/matrix || Condition OF a Mineral to Act as Ore || Classification OF Ore i.e.(1) Native Ores (2) Combined Ore (3) tertiary Ores Some Common O-2, S-2,X-,CO3-2 || Sulphate(SO4-2) Ores

Assertion (A): A mineral is called ore, when metal is extracted from it conveniently and economically. Reason (R): All ores are minerals but all minerals are not ores.

(a) Define mineral. (b) Define Ore.

Explain the terms : (a) Ores (b) Gangue .

Assertion : Carbonate and hydroxide ores are concentrated by froth floatation process. Reason : In froth floatation process, mineral oil is used because it preferentially wets the gangue particles.