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Topic: Orthochrysotile

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Clinochrysotile

Chrysotile

Antigorite

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	Chrysotile - Wikipedia, the free encyclopedia
		There are three known species of chrysotile: clinochrysotile (which is monoclinic), orthochrysotile (which is orthorhombic) and parachrysotile (which is also an orthorhombic polymorph of orthochrysotile).
		Like the other two species of chrysotile (orthochrysotile and parachrysotile) it is very difficult to distinguish from the other species.
		Orthochrysotile is the orthorhombic form of chrysotile and is more common than the other orthorhombic form parachrysotile.
	en.wikipedia.org /wiki/Orthochrysotile (254 words)

	antigorite (Site not responding. Last check: 2007-10-21)
		Antigorite is a monoclinic mineral from the kaolinite-serpentine group.
		It is a polymorph of clinochrysotile, lizardite, orthochrysotile and parachrysotile.
		It was first described and got its name from the Antigorio valley, Novara province, Piedmont, Italy.
	www.yourencyclopedia.net /antigorite.html (98 words)

	Serpentine - Wikpedia (Site not responding. Last check: 2007-10-21)
		It is found mainly in Maryland and Pennsylvania, USA.
		The most common of the serpentines, chrysotile, is actually a group of polytypes: monoclinic clinochrysotile, and orthorhombic orthochrysotile and parachrysotile.
		These are the fibrous asbestiform serpentines, accounting for over 90% of all asbestos in use.
	www.bostoncoop.net /~tpryor/wiki/index.php?title=Serpentine (875 words)

	serpentine.htm (Site not responding. Last check: 2007-10-21)
		Description: Serpentine is a family of polymorphs that include the flaky to platy antigorite, massive lizardite and fibrous clinochrysotile, orthochrysotile and parachrysotile.
		The polymorphs are often intimately intergrown in a particular rocks, hence the localities for all the serpentine family minerals are combined below.
		The serpentine occurs with calcite, tiny magnetite crystals, brucite, talc and, locally almandine.
	www.uwrf.edu /~william.s.cordua/serpentine.htm (549 words)

	USGS Spectroscopy Lab - World Trade Center USGS environmental assessment
		Asbestos can be divided into two major classes of minerals, serpentines and amphiboles.
		Chrysotile (includes the minerals clinochrysotile and orthochrysotile) is the only asbestos mineral of the serpentine group and has been the most widely used commercially.
		Chrysotile is a sheet silicate comprised of bundles of extremely small, tightly rolled sheets that form tubes or rods.
	pubs.usgs.gov /of/2001/ofr-01-0429/asbestos.html (533 words)

	USGS Spectroscopy Lab - Clark et. al. 2003 Spectral Library splib05a
		MIXTURE: Clinochlore (Phyllosilicate - Chlorite group) and Lizardite, Antigorite, and Orthochrysotile (Phyllosilicates - Kaolinite-Serpentine Group)
		COLLECTION_LOCALITY: Bessemer Mine, Iron Ridge, Southeast of Barstow, CA, USA
		Page Last Modified: Mon Jan 5 15:32 EST 2004
	pubs.usgs.gov /of/2003/ofr-03-395/DESCRIPT/S/chlorite-serpentine_skarn_br93-22b.html (136 words)

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