The main ingredients of talcum powder

The main component of talc is magnesium silicate containing water and the molecular formula is Mg3[Si4O10](OH)2. Talc belongs to the monoclinic crystal system. The crystals are in the form of pseudo-hexagonal or diamond-shaped flakes, occasionally. Usually into dense block, leaf, radial, fibrous aggregates. Colorless, transparent or white, but light green, light yellow, light brown or even light red due to a small amount of impurities; pearl luster on the cleavage surface. Hardness 1, specific gravity 2.7～2.8.