In extraction of metal how many of the following ores calcination process is involved . (i) Dolomite (ii) Malachite (iii) Calcite (iv) Copper pyrities

In extraction of metal how many of the following ores calcination process is involved . (i) Dolomite (ii) Malachite (iii) Calcite (iv) Copper pyrities
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In extraction of metal how many of the following ores calcination process is involved . (i) Dolomite ... Siderite (viii) Iron pyrite (ix) Ar gentite
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