Calcite, as the name suggests is a naturally occurring mineral calcium carbonate (caco3). Its composition is identical to that of limestone but the latter occurs as sedimentary beds.calcite is present extensively in rajasthan, india, where anand talc is located. It is found in veins traversing various rock types particularly within the aravalli and ajabgarh series, which are ancient mountain ranges of rajasthan. Calcite veins 30 to 150 cm thick, running uniformly sometimes for long distances, are usually found. Calcite of very high brightness of upto 99% is found in rajasthan.