Talc/ Soapstone -lumps & Fine Talc (Soap Stone ) whitness 85% to 98% lumps & fine powder export quality Talc is used in many industries, including paper making, plastic, paint and coatings, rubber, food, electric cable, pharmaceuticals, cosmetics, and ceramics. A coarse grayish-green high-talc rock is soapstone or steatite, used for stoves, sinks, electrical switchboards, etc.