What is Ore? Type of different ores of everyday used metals - General Knowledge

A mineral or rock, which contains enough of a chemical element to make it economically feasible to mine, is called an ore. A mineral which contains a high enough percentage of a metal for economic extraction is called a metal ore.  The recovery of metals from their ores is one area of the field of metallurgy. The separation of the desired element is done by roasting, smelting, electrolysis or various chemical treatments. Important ores of aluminum, iron, manganese, and tin are oxides; Important ores of antimony, copper, lead, mercury, nickel, silver, and zinc are sulfides.

Names of the Elements	Ores	Chemical Formulae
Aluminium (Al)	(a) Bauxite	Al2O3 . 2H2O
	(b) Corundum	Al2O3
	(c) Kryolite	Na3AlF6
Iron (Fe)	(a) Haematite	Fe2O3
	(b) Magnetite	Fe3O4
	(c) Iron Pyrite	FeS2
	(d) Siderite	FeCO3
Copper (Cu)	(a) Copper Pyrite	CuFeS2
	(b) Copper Glance	Cu2S
	(c) Malachite	2CuCO3 . Cu(OH)
Zinc (Zn)	(a) Zinc Blende	ZnS
	(b) Calamine	ZnCO3
Sodium (Na)	(a) Rock Salt	NaCl
	(b) Sodium Carbonate	Na2CO3
Potassium (K)	(a) Karnalite	KCI MgCl . 6H2O
	(b) Salt Petre	KNO3
Lead (Pb)	(a) Galena	PbS
	(b) Anglesite	PbCl2
Tin (Sn)	(a) Tin Pyrites	Cu2 FeSnS4
	(b) Cassiterite	SnO2
Silver (Ag)	(a) Silver Glance	Ag2S
Gold (Au)	(a) Calverite	AuTe2
	(b) Syvanite	AgAuTe2
Mercury (Hg)	(a) Cinnabar	HgS
	(b) Calomel	Hg2Cl2
Magnesium (Mg)	(a) Dolomite	MgCO3 . CaCO3
	(b) Karnalite	KCl MgCl2 . 6H2O
Calcium (Ca)	(a) Lime Stone	CaCO3
	(b) Dolomite	MgCO3 . CaCO3
Phosphorous (P)	(a) Phosphorite	Ca3(PO4)
	(b) Floreapetite	3Ca3(PO4)2CaFe2

Fact to remember	Name of the metal
Metal most abundant in earth’s crust	Aluminium
Metal which forms amalgam with other elements	Mercury
Metal used in a fuse wire and also in solder	Lead-tin alloy
Metal used in the filament of a bulb	Tungsten
Metal which pollutes the air of cities having large number of vehicles	Lead (reason for using unleaded petrol)
Metal used in the filaments of electric heaters	Nichrome
Metal used as radiation shield	Lead
Metal into which Uranium turns when it loses all its radioactivity	Lead
Metal used for making boats because it does not corrode by seawater	Titanium

Advertisements