apatite

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Scope note
Naturally occurring mineral of calcium fluor-phosphate; numerous deposits are found in Germany, Spain and North America. It is colorless when pure, but impurities can give it a white, green (asparagus stone), blue (moroxite), yellow, or violet color. Bones are composed of hydroxyapatite, mixed with protein (ossein) and small amounts of other minerals, such as calcium carbonate. Apatite is commercially used as a fertilizer.
apatite
Accepted term: 14-Apr-2025