Slide 1
Minerals are naturally-occurring inorganic substances with a definite and predictable chemical composition and physical properties
Slide 2
Metallic Ferrous
Non-ferrous
Precious
Non-metallic
Energy Minerals
Slide 3
CLASSIFICATION OF MINERALS
METALLIC
ENERGY
NON - METALLIC
FERROUS
PRECIOUS
NON - FERROUS
Slide 4
Ferrous – Iron Ore, Manganese, Nickel, Cobalt
Non-ferrous – Copper, Lead, Tin, Bauxite
Precious – Gold, Silver, Platinum
Non-metallic – Mica, Salt, Potash, Sulphur
Energy Minerals – Coal, Petroleum, Natural Gas
Slide 5
A mineral or an aggregate of minerals from which a valuable constituent, especially a metal, can be profitably mined or extracted
Slide 6
All Minerals are Ore
but
All Ore are not Minerals
Slide 7
Minerals generally occur in the form:
Igneous and Metamorphic rocks
Sedimentary rocks
Decomposition of surface rocks
Slide 8
Iron Ore is the basic mineral and is the backbone of Industrial development. Magnetite is the finest iron ore with a very high content of iron. Hematite ore is the most important industrial iron ore.
Slide 9
Iron is found in great abundance in nature. It is highly reactive and is hardly available in free state. Iron exists in the combined form in nature in various minerals among which oxide and sulphide ores of iron are vastly used.
Slide 10
Hematite Fe2O3
Limonite Fe2O3.3H2O
Magnetite Fe3O4
Siderite FeCO3
Iron pyrite FeS2
Copper pyrite CuFeS2
Slide 11
Dressing of ore
pulverization
Concentration of ore
removal of moisture, volatile impurities
converting sulphur, phosphorus into their oxides
converting ferrous to ferric oxide
Reduction of ore
smelting
Slide 12