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Topic: Humite

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	HUMITE Chapter15. Nesosilicates
		Humite, a magnesium silicate hydroxide mineral of the humite group, has not been studied from the local marble quarries.
		At Sterling Hill, manganoan humite is brown and associated with franklinite, calcite, and minor willemite.
		Humite has been observed as a reaction rim on apparent tephroite (Dunn, 1985a), and it coexists with chondrodite, but no studies have been made of the possible partitioning of cations between these species.
	franklin-sterlinghill.com /dunn/ch15/humite.stm (126 words)

	Mineral description : Humite (Site not responding. Last check: 2007-11-05)
		Humite (or clinohumite) as a thin vein in calcite, from Ihalainen, Finland.
		Humite is the naming member of a group of minerals called the humite group.
		The crystal structure of the humite group minerals is as layers of silicate and oxide.
	www.geology.neab.net /minerals/humite.htm (158 words)

	Humite - LoveToKnow 1911 (Site not responding. Last check: 2007-11-05)
		HUMITE, a group of minerals consisting of basic magnesium fluo-silicates, with the following formulae: - Chondrodite, Mg 3 [Mg(F,OH)] 2 [S/0 4 ] 2; Humite, Mg5[Mg(F,OH)]2[S104]3; Clinohumite, Mg 7 [Mg(F,OH)] 2 [SiO 4 ] 4.
		Humite crystallizes in the orthorhombic and the two others in the monoclinic system, but between them there is a close crystallographic relation: the lengths of the vertical axes are in the ratio 5: 7: 9, and this is also the ratio of the number of magnesium atoms present in each of the three minerals.
		Further, they often occur associated together, and it is only comparatively recently that the three species have been properly discriminated.
	www.1911encyclopedia.org /H/HU/HUMITE.htm (400 words)

	338
		Reaction Textures and P-T-fluid Evolution of Clinohumite, Humite and Chondrodite Marbles in the Kerala Khondalite Belt, Southern India
		The humite group phases, amphibole and phlogopite in assemblages I and II, which occur exclusively in the northern sector, compared to assemblage III show higher fluorine contents.
		Humite was formed by late-stage replacement of chondrodite in accordance with earlier studies (Tilley, 1951; Rosen and Raith, 1995), which suggests that humite may not be stable at high temperature (cf.
	www.the-conference.com /JConfAbs/1/338.html (511 words)

	Lets Talk Gemstones
		Wiberforce, Ontario, Canada is a source of crystals of the humite group, and deposits in Pargas, Finland and Kafveltorp, Orebro, Sweden produce yellow material.
		Like chondrodite and humite, the crystals are so small that the very few gemstones cut from this material are the province of collectors.
		Humite exhibits a hardness of 6 on the Mohs scale, a density of 3.20 to 3.32, and refractive index readings from 1.607 to 1.675.
	www.attawaygems.com /NMFG/Lets_talk_gemstones_Humite.html (1084 words)

	Nordbergite from Franklin, New Jersey
		is, however, preferred because his treatment of the humite group is in accordance with the results from X-ray studies obtained independently by Bragg and West.
		The last column of the table is the preferred position, similar to the position given to humite by Goldschmidt.
		The letters assigned to the forms are those for the corresponding forms of humite as given in the Winkeltabellen.
	www.minsocam.org /msa/collectors_corner/arc/franklinv.htm (953 words)

	Multicolour.com > Gem Library > Gemstones Varieties > Clinohumite
		Humite is a related species to clinohumite as might be expected by their names.
		Clinohumite, like humite, is a member of the Humite Group of minerals.
		Members of the humite group are noted for having a mixture of silicate and oxide layers in their structures.
	www.multicolour.com /gemstones/clinohumite.html (609 words)

	HUMITE (Magnesium Iron Silicate Fluoride Hydroxide)
		Humite is the namesake member of the Humite Group of minerals.
		Members of the Humite Group are noted for having a mixture of silicate layers and oxide layers in their structures.
		In the case of humite, there are three consecutive olivine layers that alternate between each brucite layer.
	mineral.galleries.com /minerals/silicate/humite/humite.htm (186 words)

	THE HUMITE GROUP OF MINERALS
		The Humite Group of minerals form a morphotropic series with the mineral olivine and brucite.
		Unfortunately the Humite Group members have similar characteristic and properties and are difficult to tell apart without optical tests.
		The first four members shown were the original members of the Humite Group.
	mineral.galleries.com /minerals/silicate/humite.htm (355 words)

	The heart of the new Gemstone Database (Site not responding. Last check: 2007-11-05)
		Note that the RI for Humite shows up in red numbers surrounded by a blue border.
		This is because Humite's RI falls outside the normal range of the RI's we entered but within the new Near Hits buffer zone.
		Note that the red Refractive Index numbers are because Humite is a Near Hit in the RI category.
	www.gemologytools.com /Separator.htm (544 words)

	Norbergite
		Ribbe (1969) The crystal structure of the humite minerals: I. Norbergite.
		The crystal structures of the humite minerals: I. Norbergite.
		Norbergite is a member of the humite group.
	www.toprocks.net /MineralList/66/Norbergite.asp (351 words)

	futurefeedforward: send a story
		Humites(TM) and Humites Environs(TM), both new for the holiday season, include cadres of miniature, human-like creatures, each about the size of a fingernail.
		Consumers can keep their Humites in one of the elegant bookshelf or coffee table Environs Toyboy markets, and care for them with a range of Humite Foods and accessories.
		"Humites look like people, but their physiology and psychology have deep roots in the genetics of social insects," explains Engineering Director Pfifle Jubilee.
	futurefeedforward.com /send.php?sendid=13 (399 words)

	Refinement of hydrogen positions in natural chondrodite by powder neutron diffraction: implications for the stability ...
		Refinement of hydrogen positions in natural chondrodite by powder neutron diffraction: implications for the stability of humite minerals -- Berry and James 66 (3): 441 -- Mineralogical Magazine
		Refinement of hydrogen positions in natural chondrodite by powder neutron diffraction: implications for the stability of humite minerals
		Ti contents of natural humites usually result in only one H
	minmag.geoscienceworld.org /cgi/content/abstract/66/3/441 (203 words)

	Quartz 'N' All - High Quality Crystals, Minerals and Fossils Learn about Clinohumite Page.
		It fluoresces under ultra-violet light as a yellow to orange colour.
		Being a member of the humite group, it is noted for having a mixture of silicate layers and oxide layers in its structure.
		This particular mineral has four stacked layers that alternate between its layers of Brucite.
	www.quartznall.co.uk /learnclinohumite.htm (230 words)

	Fluorescent Museum page 5
		It is a group with fluorescent powellite crystals with heulandite, apophylite, and stilbite.
		A banded rock of humite (probably chondrodite), aragonite and calcite from Long Lake zinc mine, near Parham, Ontario.
		The aragonite fluoresces two colors - peach and pale blue SW and pale white and pale blue LW.
	www.geocities.com /~stuarts1031/fluorescent5.html (764 words)

	Elephant Mine in Gems, Rocks & Minerals -- Industry Directory (Site not responding. Last check: 2007-11-05)
		It is a double terminated twin, and it is facet grade (though I hope it never gets cut!!).
		This is the second ever deposit found of this grade of Humite.
		The specimen that I have is 1.3 grams.The other local for Humite is Russia, this deposit is new!!
	www.gemsrocks.com /trade/aa946976.html (174 words)

	Humite Mineral Data
		Ribbe P H, Gibbs G V, American Mineralogist, 56 (1971) p.1155-1173, Crystal structures of the humite minerals: III.
		Mg/Fe ordering in humite and its, relation to other ferromagnesian silicates
		Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.
	webmineral.com /data/Humite.shtml (221 words)

	Definition of humite - Merriam-Webster Online Dictionary (Site not responding. Last check: 2007-11-05)
		Click here to search for another word in the Merriam-Webster Online Dictionary.
		Visit Britannica.com for more information on "humite "
		Get the Top 10 Search Results for "humite "
	www.bonus.com /contour/merriam_webster/http@@/www.m-w.com/dictionary/humite (55 words)

	An investigation of matrix effects in the analysis of fluorine in humite-group minerals by EMPA, SIMS, and SREF -- ...
		In analyzing fluoborite in the most unfavorable cases, the difference in Ion Yield (F/Mg) between "disoriented" humite-group minerals and "oriented" fluoborite samples can reach approximately 27%.
		Finally, a lower than expected IY(F/Si) from the F/Si working curve (made with humite minerals) is shown by topaz, which can be ascribed to chemical matrix effects, as well as to the covalent-type bonding between F and the major element in the matrix (Al).
		This article has been cited by other articles:
	ammin.geoscienceworld.org /cgi/content/abstract/85/1/89 (551 words)

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