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Talc is used to make baby powder (and talcum powder) Talc is a hydrous silicate mineral composed of magnesium (Mg), silicon and oxygen (SiO2, silica), and water. Its chemical formula is Mg3Si4O10(OH)2. Talc is relatively pure in composition but can contain small amounts of aluminum, iron, manganese, and titanium. Talc can be white, apple green, dark green, or brown, depending on its composition. This is from the:

http://pubs.usgs.gov/fs/fs-0065-00/fs-0065-00textonly.pdf

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16y ago

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