Minerals and Metals in Ancient India v2.c47.169
Minerals and Metals in Ancient India v2.c47.169
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v2.c47.169
Talc : Phyllosilicate. Mg₃Si₄O₁₀(OH)₂. Faint green, soapy. One of the softest minerals. Hardness 1. Perfect, basal cleavage. Sectile, greasy. Pearly luster Talc could be foliated. The massive variety is called Steatite or Soapstone. This is coarse granular and greyish green. Yields variable quantity of water on ignition. It occurs in large amount in India and China.