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Topic: Chlorite group

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	Chlorite - LoveToKnow 1911
		CHLORITE, a group of green micaceous minerals which are hydrous silicates of aluminium, magnesium and ferrous iron.
		Chemically, the chlorites are distinguished from the micas by the presence of a considerable amount of water (about 13%) and by not containing alkalis; from the soft, scaly, mineral talc they differ in containing aluminium (about 20%) as an essential constituent.
		Closely allied to the chlorites is another group of micaceous minerals known as the vermiculites, which have resulted by the alteration of the micas, particularly biotite and phlogopite.
	www.1911encyclopedia.org /Chlorite (672 words)

	Chlorite - Search Results - MSN Encarta
		Chlorite, group of green minerals of complex composition.
		Chlorites are hydrous iron-magnesium aluminum silicates, with a hardness (a determination...
		Ions are electrically charged atoms or groups of atoms.
	ca.encarta.msn.com /Chlorite.html (70 words)

	chlorite.htm
		Chlorites are most commonly formed in a wide range of low grade metamorphic environments produced by burial and regional metamorphism, hydrothermal alteration and recrystallization along faults and shear zones.
		Chlorite is found in the Keweenawan metabasalts in the pits and shaft of the Melrose copper prospect, NW NW sec.
		DOUGLAS COUNTY: Chlorite is widespread in the amygdules and groundmass of the Keweenawan metabasalts throughout the county.
	www.uwrf.edu /~wc01/chlorite.htm (1477 words)

	Chlorite - Wikipedia, the free encyclopedia
		A chlorite (compound) is a compound that contains this group, with chlorine in oxidation state +3.
		Sodium chlorite is derived indirectly from sodium chlorate, NaClO
		The main application of sodium chlorite is the generation of chlorine dioxide for bleaching and stripping of textiles, pulp, and paper.
	en.wikipedia.org /wiki/Chlorite (327 words)

	Chlorite group - Wikipedia, the free encyclopedia
		The chlorites are a group of phyllosilicate minerals.
		Chlorite is a common mineral associated with hydrothermal ore deposits and commonly occurs with epidote, sericite, adularia and sulfide minerals.
		It occurs in the quartz, albite, sericite, chlorite, garnet assemblage of pelitic schist.
	en.wikipedia.org /wiki/Chlorite_group (432 words)

	Chlorite group (via CobWeb/3.1 planetlab2.cs.virginia.edu) (Site not responding. Last check: 2007-10-03)
		Chlorite is a group of phyllosilicate minerals often classified as clays.
		Chlorite is commonly found in igneous rocks as an alteration product of mafic minerals such as pyroxenes, amphiboles, and biotite.
		Chlorite is a common metamorphic mineral, usually indicative of low-grade metamorphism.
	chlorite-group.iqnaut.net.cob-web.org:8888 (232 words)

	International Institute for Health and Wellness, Inc. (Site not responding. Last check: 2007-10-03)
		The structure of this group is composed of silicate layers sandwiching a gibbsite (or brucite) layer in between, in an s-g-s stacking sequence.
		The structure of this group is similar to the montmorillonite group with silicate layers sandwiching a gibbsite-like layer in between, in an s-g-s stacking sequence.
		The structure of this group is composed of silicate layers sandwiching a brucite or brucite-like layer in between, in an s-b-s stacking sequence similar to the above groups.
	www.iihwcityofrefuge.org /clay.html (2476 words)

	chlorite minerals,Chlorite Information,Chlorite Uses,Chlorite Properties
		Chlorite is a general name for several minerals that are difficult to distinguish by ordinary methods.
		Chlorites typically form flaky microscopic crystals and it is this reason that they are sometimes included in the clay group of minerals.
		Chlorites are most often known to mineral collectors as inclusions in or coatings on quartz, danburite, topaz, calcite and many other minerals.
	www.mineralszone.com /minerals/chlorite.html (379 words)

	Chlorite (sodium salt) (CASRN 7758-19-2), IRIS, Environmental Protection Agency (Site not responding. Last check: 2007-10-03)
		To express doses as the chlorite ion, the estimated doses were multiplied by the molecular weight ratio of sodium chlorite to chlorite.
		An additional group of F1 pups was chosen for neurohistopathology on PND 11 (examination of the brain and spinal cord) or PND 60 (sensory ganglia, dorsal and ventral nerve roots, and several peripheral nerves and muscles).
		In in vitro assays, chlorite induced reverse mutations in Salmonella typhimurium (with activation) and chromosome aberrations in Chinese hamster fibroblast cells (Ishidate et al., 1984).
	www.epa.gov /iris/subst/0648.htm (4967 words)

	Chlorite - Search Results - ninemsn Encarta
		Chlorite, group of minerals with the general formula (Fe,Mg,Al)
		Chlorites are generally green; the name is derived from the Greek...
		Among the important schists are mica schist, hornblende schist, chlorite schist, and talc schist.
	au.encarta.msn.com /Chlorite.html (104 words)

	Lee A. Groat - Clay Manual
		Chlorite may be seen as a regular alternation of mica and brucite layers.
		In regular mixed layer structures such as chlorite, the basal spacing is a combination of that of the individual layers.
		Iron-rich chlorites (where Fe fills more than ~30% of the octahedral sites) have relatively weak (001) and (003) reflections and strong (002) and (004) reflections and are thus easily confused with kaolinites.
	www.eos.ubc.ca /personal/groat/claymanual.htm (999 words)

	USGS OFR01-041: Chlorite Group
		The basic structure of chlorites consists of negatively charged mica-like (2:1) layers regularly alternating with positively charged brucite-like (octahedral) sheets (Grim, 1962).
		Chlorites are also common constituents of argillaceous sedimentary rocks where these minerals occur in both detrital and authigenic forms.
		Chlorites have their 001 peaks at 14 to 14.4 angstroms, depending on the individual species.
	pubs.usgs.gov /of/2001/of01-041/htmldocs/clays/chlor.htm (196 words)

	Chlorite
		Inasmuch as water is a major cause of partial melting, the thermodynamic stability of chlorite is of significance to models of subduction, dewatering, and magma genesis.
		Chlorites are also significant components of metamorphic terranes that are impacted by acidified atmospheric deposition in the eastern U.S. and Canada, and thus their weathering characteristics (May et al, in preparation) influence water chemistry and watershed response to acidic inputs.
		The thermodynamic stability of chlorite is known to be affected by various degrees of ordering of the octahedral and tetrahedral cations, so that rates of weathering for chlorites are affected by cation occupancies of the various structural sites.
	ruby.colorado.edu /~smyth/chlorite.html (4068 words)

	Gordon's M.Sc. Thesis
		Chlorite was chosen because the flat, easily cleaved {001} surface facilitates study with AFM and it has two chemically different surfaces produced by cleaving along this plane.
		Chlorite is a common, althoug h minor, component in soils and has a reactive surface similar to a variety of other clay mineral structures.
		Chlorite, a common but minor clay mineral in soils (Bailey 1975), was studied because it has proven to be a suitable substrate on which to adsorb cations.
	nature.berkeley.edu /~gvrdolja/thesis.html (9904 words)

	CHLORITE
		Chlorite is a Mg-rich sheet silicate having complex chemistry and structure.
		The two main groups of chlorite are orthochlorites, which conform closely to the ideal chemical composition, and leptochlorites, which form by the oxidation of orthochlorites.
		Chlorites are common rock forming minerals in clastic sediments, and hydrothermally altered igneous rocks.
	www.und.nodak.edu /instruct/mineral/geol318/webpage/eull (876 words)

	PIMA Applications
		Chlorites are ubiquitous and can be found in low temperature regimes where they are considered more as clays and in higher temperature environments associated with porphyry copper, with VMS, with kimberlites and base metal systems.
		Because of the solid solution substitution series that exists within the various chlorite species, especially with iron, magnesium and aluminum, chlorites respond well to SWIR analyses and provide valuable information about their environments and alteration processes.
		The changes in the spectra and absorption feature positions are dramatic and, for the most part, when chlorites are present in perhaps at least 15% amounts, their species can be determined.
	www.pimausa.com /clay_min.html (2124 words)

	Phyllosilicates
		The phyllosilicates, or sheet silicates, are an important group of minerals that includes the micas, chlorite, serpentine, talc, and the clay minerals.
		The vermiculite and smectite groups are therefore expanding type sheet silicates and as the water is incorporated into the structure the mineral increases its volume.
		Muscovite, Paragonite, and Margarite are the white micas, and represent the trioctahedral group, and Biotite and Clintonite (Xanthophyllite) the fl or brown mica, represents the dioctahedral group.
	www.tulane.edu /~sanelson/geol211/phyllosilicates.htm (1903 words)

	THE CLAY GROUP
		The clay minerals are a part of a general but important group within the phyllosilicates that contain large percentages of water trapped between the silicate sheets.
		This group is composed of several minerals including pyrophyllite, talc, vermiculite, sauconite, saponite, nontronite and montmorillonite They differ mostly in chemical content.
		This group is not always considered a part of the clays and is sometimes left alone as a separate group within the phyllosilicates.
	mineral.galleries.com /minerals/silicate/clays.htm (913 words)

	RedOrbit - Reference Library
		- A Chlorite ion is a polyatomic anion consisting of an atom of chlorine and two oxygen atoms.
		The oxidation state of the chlorine atom within the chlorite ion is +3.
		Sodium chlorite is derived indirectly from sodium chlorate, NaClO3.
	www.redorbit.com /education/reference_library?article_id=451 (347 words)

	The Probert Encyclopaedia - Rocks and Minerals (O-Z)
		Oxide refers to a group of minerals where oxygen joined with a metal is a major constituent.
		It is a member of the chlorite group of minerals.
		Potassium argon dating is a technique used in geology for estimating the age of a mineral or rock, based upon the rate of decay of radioactive potassium into argon.
	www.fas.org /news/reference/probert/H3.HTM (3071 words)

	Mars Mineral Spectroscopy Database
		Chlorite group minerals occur mainly in low temperature metamorphic rocks on Earth.
		However, chlorites may also form by the breakdown of basalts in the presence of water.
		The photo to the left is representative of this mineral group; however, it is not the same sample on which spectra listed below were measured.
	www.mtholyoke.edu /courses/mdyar/database/index.shtml?group=chlorite (111 words)

	Chlorite Group: Chlorite Group mineral information and data. (via CobWeb/3.1 planetlab2.cs.virginia.edu) (Site not responding. Last check: 2007-10-03)
		Dodge, F.C.W. (1973), Chlorites from the granitic rocks of the central Sierra Nevada batholith: Min.
		Lougear, A., M. Grodzicki, C. Bertoldi, A.X. Trautwein, K. Steiner, and G. Amthauer (2000), Mössbauer and molecular orbital study of chlorites: Physica and Chemistry of Minerals: 27: 258-269.
		Bertoldi, C., Benisek, A., Cemi?, L., and Dachs, E. (2001) The heat capacity of two natural chlorite group minerals derived from differential scanning calorimetry.
	www.mindat.org.cob-web.org:8888 /min-1016.html (287 words)

	Chlorite -- from Eric Weisstein's World of Chemistry
		A group of layer silicates with an approximately 14 Å repeat distance.
		Chemical analysis is required to distinguish members of this group from each other (such as powder diffraction).
		Members of the chlorite group include apophyllite, chlorite = Mg
	scienceworld.wolfram.com /chemistry/Chlorite.html (47 words)

	USGS OFR01-041: Bibliograph - Chlorite group
		Barnhisel, R.I., 1977, Chlorites and hydroxy interlayered vermiculite and smectite, in Dixon, J. B., Weed, S.B., Kittrick, J.A., Milford, M.H., and White, J.L. (Eds.), Minerals in soil environments, Soil Sci.
		Sassi, Raffaele, and Zane, Antonella, 1997, On the compositional variability of metamorphic chlorites as an effect of the micro-site chemistry: Atti della Accademia Nazionale dei Lincei.
		Vasilenko, V.B., and Kholodova, L.D., 1977, Paired nonlinear regression of P (sub 2) O (sub 5) with trace elements in rocks of the carbonate and chloride complexes of Seligdar: Soviet Geology and Geophysics, v.
	pubs.usgs.gov /of/2001/of01-041/htmldocs/biblios/chlgr.htm (3704 words)

	[No title]
		The name of the group is derived from Greek phylon, or leaf, as in phyllo pastry.
		Most phyllosilicates are hydroxyl bearing, with the (OH)-1 group located in the center and the same height of the rings of unshared apical oxygens.
		For the dioctahderal micas, trivalent cations in the octahedral sheets (generally Al, Fe+3, or Cr+3) are also bound to three oxygen or (OH)- groups, but to maintain charge balance one third of the octahedral sites are left empty (as for the corundum-ilmenite-hematite structures), thus each oxygen or (OH)- group has cations in two adjoining octahedra.
	www.auburn.edu /~hameswe/MinDay21.html (732 words)

	Chlorite
		bright green, strongly coloured chlorite, here as an alteration of garnet is a blueschist (with sphene, glaucophane and epidote)
		Biotite altering to chlorite, with a subhedral crystal of sphene (centre)
		The anomalous brown colours of the chlorite indicate a magnesium-rich variety.
	www.ucl.ac.uk /~ucfbrxs/PLM/chlorite.html (87 words)

	CHLORITE (Iron Aluminum Magnesium Silicate Hydroxide)
		Group: The Clays and also The Chlorite Group.
		The general formula for chlorite is (Fe, Mg, Al)
		The chlorite inclusions in clear quartz are particularly interesting when they form as a coating on a crystal early in its development.
	mineral.galleries.com /minerals/silicate/chlorite/chlorite.htm (549 words)

	NYS museum mineral collection (Site not responding. Last check: 2007-10-03)
		The specimens are listed alphabetically by county, then town within each group of mineral species.
		The specimen number and the habit of the mineral are listed as is the source of the specimen if known.
		For example, the name "chlorite" is used as a species name if the specimen is not identified sufficiently to specify which of the chlorite group minerals it actually is. Where the composition of a member of a solid solution series is known, the specimen is listed under the appropriate name.
	www.nysam.org /minerals.cfm (439 words)

	Mineral Description (Site not responding. Last check: 2007-10-03)
		A relict chlorite porphyroblast within a Meguma Group pelite, from Nova Scotia.
		The interference colour displayed by the chlorite is masked to some degree by the colour of teh grain.
		oxidation may produce iron stains, but chlorite is relatively stable.
	www.brocku.ca /earthsciences/people/gfinn/minerals/chlorite.htm (144 words)

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