the degree of hardness of talc

Talc: The mineral Talc information and pictures - MineralsTalc is known for being the softest mineral on earth. It is number 1 on the Mohs hardness scale, and can be easily scratched by a fingernail. Talc is not commonly.the degree of hardness of talc,the degree of hardness of talc,Material Hardness Tables, Ted Pella, Inc.material hardness, mohs, knoop. . Hardness Tables. Mohs Hardness Scale . 7, Quartz, Vitreous Silica. 8, Topaz, Quartz or Stellite. 9, Corundum, Topaz.the degree of hardness of talc,Gemstone Hardness and Wearability - International Gem SocietyA gem's overall wearability grade takes its hardness into account. However . Every mineral can be ranked based on those others minerals it can scratch. . Gemstone hardness contributes greatly to the degree to which a gem will show wear.

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the degree of hardness of talc