Calcite is a carbonate of calcium (CaCO3) containing 56% CaO and 44% CO2 . It is one of the important industrial minerals also known as 'Calc Spar'. Various grades of calcite products of Wolkem India Ltd are marketed by us. Use of calcite is dictated by highest purity of CaCO3 , as high as +98%, with minimum inclusions and highest brightness. Its applications are in varying sizes from coarse to as fine as 10 to 2 microns.