Talc is a phyllosilicate mineral composed of hydrated magnesium silicate with the chemical formula Mg3Si4O10(OH)2. Talc is the world's softest mineral. Soapstone is a metamorphic rock composed predominantly of talc. Its soapy or greasy feel accounts for the name soapstone given to compact aggregates of talc and other rock-forming minerals. Talc is found as a metamorphic mineral in veins, in foliated masses, and in certain rocks. It is often associated with serpentine, tremolite, forsterite, and almost always with carbonates (calcite, dolomite, or magnesite) in the lower metamorphic facies. It also occurs as an alteration product, as from tremolite or forsterite. Talc is an ultra-versatile mineral valued for its diverse properties by a wide range of applications. Pritium Metals, with the best quality Talc mines and advanced factories, meets the needs of various manufacturing and construction industries for limestone in lumps or powder. Please contact our business department to buy this product or get additional information.