Talc is a common silicate mineral with structural formula (MG6) [si8] O20 (OH) 4. It's very soft and has a greasy feel. Ten minerals have been selected to represent 10 hardness levels, known as Mohs hardness. The first (and softest) of these 10 grades is talc. Soft talc can replace chalk to make white marks. Talc is generally in the form of block, leaf, fiber or radiation. The color of talc is white or grayish white, and it may bring various colors due to the inclusion of other impurities. Talc has many uses, such as refractory, paper, rubber filler, pesticide absorbent, leather coating, cosmetic material and carving material, etc.
Common specifications: 200 mesh, 325 mesh, 400 mesh, 600 mesh, 800 mesh, 1250 mesh, etc.