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APATITE - 3 reference results
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apatite
apatite, mineral, a phosphate of calcium containing chlorine or fluorine, or both, that is transparent to opaque in shades of green, brown, yellow, white, red, and purple. Apatite is a minor constituent in igneous and metamorphic rocks. Yellow-green asparagus stone and blue-green manganapatite are used in jewelry. Apatite is mined to make phosphatic fertilizers and is used in fission track dating of rocks (see dating). Commercial deposits are mined in Idaho, Tennessee, and Wyoming, and in N Africa and Russia.
The Columbia Electronic Encyclopedia Copyright © 2004.
Licensed from Columbia University Press
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apatite

A member of the phosphate group of minerals, the world's major source of phosphorus, found as variously coloured, glassy crystals, masses, or nodules. Much of it has a chemical composition approximating Ca5(PO4)3(F,Cl,OH). If not for its softness, apatite would be a popular gemstone; some of the material found is clear, but it is fragile and difficult to cut and polish.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Apatite.(Jewel of the Month)
Nov 01, 2004; Three large pieces of teal-color rough stand out in this image of apatite, furnished by L. Allen Brown of All That Glitters,...
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Renewed Mining at the Western Quarries of Mount Apatite, Maine.
Jan 01, 1997; After decades of inactivity, mining has been resumed on the western slopes of Mount Apatite in the town of Auburn, Maine (see...
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ORTHOPAEDICS: Apatite-organic polymer composites may prove useful in bone repair
Feb 01, 1996; Japanese scientists at Kyoto University believe they have found apatite-polymer composites that may prove useful as bone...
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Nanocrystalline apatite-based biomaterials.(Brief article)(Book review)
Jun 01, 2009; 9781606920800 Nanocrystalline apatite-based biomaterials. Ed. by D. Eichert et al. Nova Science Publishers 2009 86 pages $37.00...
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In vitro apatite formation is good screening test for in vivo bioactivity.
Mar 19, 2003; 2003 MAR 19 - (NewsRx.com & NewsRx.net) -- A study from Japan has shown that evaluating apatite formation in simulated body fluid...
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HighBeam Research, Inc. © Copyright 2009.

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