Asbestos: Myth Talc
Talc (derived from Persian into Arabic by talq) is a mineral composed of hydrated magnesium silicate with the chemical formula H2Mg3 (SiO3) 4 or Mg3Si4O10 (OH) 2. In bulk, it is widely used substance known as talcum powder. It occurs as foliated to fibrous masses, its monoclinic crystals being so rare as to be almost [...]