Talc is crystallized in the monoclinic system as flat crystals and laminar, radial and dense masses with a white footprint and ranges from translucent to transparent. Large talc laminates are found with pearly luster. Despite bending, Talc laminates are not elastic like mica. It shows a perfect cleavage in one direction with irregular fracture. The specific gravity and hardness of talc are 2.8 and 1 Mohs, respectively. Talc also contains traces of iron, calcium and aluminum.
Talc had been used in cosmetics since ancient times. Currently, it is used in cosmetics, paper coats, as filler in paints and plastics, molding of electrical insulators, heater parts, chemical vessels and as raw material for ceramics, anti-acid holes and coating of laboratory table tops.
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