Talc
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Talc, or talcum, is a clay mineral composed of hydrated magnesium silicate, with the chemical formula Mg3Si4O102. Talc in powdered form, often combined with corn starch, is used as baby powder. This m
Talc 177589
A block of talc
View of trioctahedral sheet of talc. Yellow spheres are hydroxyl; blue are magnesium. Apical oxygen binding sites are white.
![Talc crystal viewed along the [100] axis, looking along the layers of the crystal](https://upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Talc_structure.jpg/500px-Talc_structure.jpg)
Talc crystal viewed along the [100] axis, looking along the layers of the crystal
Asbestos
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Asbestos or asbestus is a group of naturally occurring, fibrous silicate minerals that have been used for thousands of years to create flexible fire-resistant objects, such as fireproof fabrics. It is
Talc
…and ovarian cancer. One of these, published in 1993, was a US National Toxicology Program report, which found that cosmetic grade talc containing no asbestos-like fibres was correlated with tumor formation in rats forced to inhale talc for 6 hours a day, five days a week over at least 113 weeks. A 1971 paper…
Industrial scale asbestos mining began in 1878 in Thetford township, Quebec. By 1895, mining was increasingly mechanized.
Canada's biggest power shovel loading an ore train with asbestos at the Jeffrey Mine, Johns-Manville Co., Asbestos, Quebec, June 1944
The applications of asbestos multiplied at the end of the 19th century—this is an advertisement for an asbestos-lined clothes iron from 1906
Asbestos fabric