
02/20/09, 11:00 PM
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Join Date: Jun 2007
Location: MN
Posts: 970
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Diatomaceous earth also known as DE, TSS, diatomite, diahydro, kieselguhr, kieselgur or celite — is a naturally occurring, soft, chalk-like sedimentary rock that is easily crumbled into a fine white to off-white powder. This powder has an abrasive feel, similar to pumice powder, and is very light, due to its high porosity. The typical chemical composition of diatomaceous earth is 86% silica, 5% sodium, 3% magnesium and 2% iron. ( http://en.wikipedia.org/wiki/Diatomaceous_earth)
86% silica?? Is that related to silicone?? I have no idea....
Anyway, the rest of the article is pretty neat...has a microscope picture of what a diatom looks like.
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