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Topic: Cobaltite

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	Cobaltite - LoveToKnow 1911
		COBALTITE, a mineral with the composition CoAsS, cobalt sulpharsenide.
		It is found as granular to compact masses, and frequently as beautifully developed crystals, which have the same symmetry as the isomorphous mineral pyrites, being cubic with parallel hemihedrism.
		Crystals have also been found at Khetri in Rajputana, and under the name selata the mineral is used by Indian jewellers for producing a blue enamel on gold and silver ornaments.
	www.1911encyclopedia.org /Cobaltite (197 words)

	COBALTITE (Cobalt Iron Arsenic Sulfide)
		Cobaltite although rare is still an important and valuable ore of cobalt, a strategically and industrially useful metal.
		The symmetry of cobaltite is somewhat in dispute.
		If cobaltite is actually orthorhombic than these forms are either pseudocubes etc or they are pseudomorphs from a truly isometric phase which existed at higher temperature and/or pressure.
	www.galleries.com /minerals/sulfides/cobaltit/cobaltit.htm (421 words)

	cobaltite - HighBeam Encyclopedia
		cobaltite, opaque, silver-white, sometimes reddish or grayish mineral of the pyrite group, a compound of cobalt, arsenic, and sulfur, CoAsS.
		It occurs in crystals of the cubic system, also in compact to granular masses.
		It is an important ore of cobalt, found chiefly in Sweden, Norway, India, and Azerbaijan.
	www.encyclopedia.com /doc/1E1-cobaltit.html (177 words)

	C&EN: IT'S ELEMENTAL: THE PERIODIC TABLE - COBALT (Site not responding. Last check: 2007-10-11)
		An example of such an ore is the mineral cobaltite [(Co,Fe)AsS], which is sometimes found together with elemental silver, and the following story is connected with this.
		The element was isolated by Swedish chemist Georg Brandt in 1735.
		Occurrence: Found in the minerals cobaltite, smaltite, and erythrite and is often associated with nickel, silver, lead, copper, and iron ores.
	pubs.acs.org /cen/80th/print/cobalt.html (724 words)

	American Elements: Lanthanum Strontium CobaltiteFerrite (LSCF) Supplier & Tech Info
		Lanthanum Strontium Cobaltite Ferrite (Sr = 10%) Powder
		Lanthanum Strontium Cobaltite Ferrite (Sr = 20%) Powder
		Lanthanum Strontium Cobaltite Ferrite is available as a powder for tape casting, air spray/thermal spray/plasma spray, extrusion and sputtering fuel cell applications and as an ink for screen printing.
	www.americanelements.com /lscf.html (288 words)

	Mineral Galleries - THE COBALTITE GROUP
		The Cobaltite Group is composed of minerals with a similar isometric or pseudo-isometric structure and related chemistry.
		Cobaltite may have even a lower symmetry of orthorhombic;
		Only cobaltite is relatively common with most other members of this group being uncommon to rare.
	mineral.galleries.com /minerals/sulfides/cobaltit.htm (221 words)

	NSF Ferroelasticity (Site not responding. Last check: 2007-10-11)
		The effect of the external loading on the elastic hysteresis and ferroelastic behavior of perovskites will be characterized by the compression tests.
		Unique in-situ techniques in electron microscopy and X-ray diffraction will be employed to analyze the lattice distortions and defect structures, domain and domain wall microstructures, and vacancy ordering/clustering that occurs during the paraelastic to ferroelastic phase transition in lanthanum cobaltite perovskites as a function of pressure, temperature and composition.
		Evaluate the effects domain switching/phase transformation have on the mechanical performance of cobaltites.
	www.materials.drexel.edu /faculty/nina/documents/ferroelasticity.html (508 words)

	Cobaltite Gallery (Site not responding. Last check: 2007-10-11)
		This is quite simply the largest sharp cubic cobaltite I have seen from these famous old deposits in Canada, and more than that, i cannot think of as large and sharp a cubic Cobaltite from any other locality (the classic Swedish crystals having another habit entirely).
		Cobaltite crystals found in level 860 - 1st Ferriere mass.
		Single crystal of silvery cobaltite in matrix with yellow chalcopyrite.
	www.mindat.org /gallery.php?min=1093 (314 words)

	PIRSA Minerals - Mineral Resource Potential - Cobalt (Site not responding. Last check: 2007-10-11)
		It is a silvery white magnetic metal of low strength and ductility at normal temperatures but ductile at high temperatures.
		Other resources in the area include an indicated 18.7 Mt at 1% Cu, 0.05% Co and 10 g/t Ag at Windabout prospect, and 1.1 Mt at 1.7% Cu, 0.04% Co and 17 g/t Ag at MG 14 prospect.
		Ore minerals include chalcopyrite, cobaltite, smaltite, pentlandite, galena, sphalerite, pyrite, pyrrhotite, arsenopyrite, scheelite and molybdenite.
	www.pir.sa.gov.au /pages/minerals/commodity/cobalt.htm (667 words)

	cobaltite - OneLook Dictionary Search
		Tip: Click on the first link on a line below to go directly to a page where "cobaltite" is defined.
		Cobaltite : Online Plain Text English Dictionary [home, info]
		COBALTITE : 1911 edition of the Encyclopedia Britannica [home, info]
	www.onelook.com /?w=cobaltite (136 words)

	cobalt
		Cobalt occurs in the mineral cobaltite, smaltite, and erythrite, and is often associated with nickel, silver, lead, copper, and iron ores, from which it is most frequently obtained as a by-product.
		Some of the commercially mined ores are carrollite, smaltite, cobaltite, siegenite, and sphaerocobaltite.
		The amount of cobalt mined is relatively small in comparison with copper, nickel, and the cobalt supply depends to a large extent on the demand for the latter two metals.
	www.speclab.com /elements/cobalt.htm (1724 words)

	cobaltite.htm (Site not responding. Last check: 2007-10-11)
		Description: Cobaltite is a rare mineral found as silvery metallic grains in hydrothermal deposits.
		LAFAYETTE COUNTY: Cobaltite (or possibly safflorite -CoAs2) was observed as microscopic intergrowths with marcasite as the Martin Mine, south of Benton (SW SE Sec.16 T.1N R.1E) (Heyl et.
		The authors speculate that the mineral could be more widespread than recognized in the Upper Mississippi Valley zinc-lead district.
	www.uwrf.edu /~wc01/cobaltite.htm (129 words)

	Met and Mat Trans Abstracts B: June 1995
		Direct oxidation of cobaltite to cobalt oxides with traces of arsenic was observed by roasting at 1023 K or above.
		In this article, the process mineralogy of the oxidation of cobaltite is presented at various temperatures.
		The results from X-ray diffraction (XRD) analysis, reflected light microscopic analysis, and scanning electron microscopic analysis of the roasted cobaltite concentrates together with a rationalized thermodynamic analysis are presented.
	www.tms.org /pubs/journals/MT/B/9506/abstracts-9506.B.html (3903 words)

	Optical Properties of Cobaltite and Manganite (GMR) Materials. (Site not responding. Last check: 2007-10-11)
		Optical Properties of Cobaltite and Manganite (GMR) Materials.
		In the case of the cobaltites, we observe that the substitution of La by either Sr or Ca enhances the optical conductivity, \sigma_1(ømega), throughout the infrared range of frequencies and a gap-like feature appears close to 1000 cm^-1.
		Also, a sum-rule analysis of the room-temperature conductivity reveals that for the same level of divalent substitution x the carrier density at infrared frequencies is much higher for the cobaltite samples compared with the manganite samples.
	flux.aps.org /meetings/BAPSMAR96/abs/S3900004.html (169 words)

	Alan Guisewite's Mineral Collection Images: Miscellaneous Systematic Sulfides Page
		A vein of silvery cattierite (cobalt disulfide) runs vertically through this (probably cobaltite) miniature from Nord Mine, Finnshytteberg ore field, Värmland, Sweden.
		This is an excellent (and rare!) thumbnail of cobaltite (a cobalt arsenosulfide) on gray dolomite from the Elizabeth Lake area (Foster Township) near Espanola, Ontario, Canada.
		A sharp 5mm cobaltite crystal in massive cobaltite from thr Marrgruvan Mine, Håkansboda, Sweden.
	www.cs.cmu.edu /People/adg/adg-pssuiimages.html (5740 words)

	Gersdorffite - Wikipedia, the free encyclopedia
		Gersdorffite occurs as a hydrothermal vein mineral along with other nickel sulfides.
		Associated minerals include nickeline, nickel-skutterudite, cobaltite, ullmannite, maucherite, lollingite, platinum-group minerals, millerite, pyrite, marcasite, and chalcopyrite.
		Gersdorffite was first described in 1843 and named for Johann von Gersdorff (1781–1849), owner of the nickel mine at Schladming, Austria the type locality.
	en.wikipedia.org /wiki/Gersdorffite (183 words)

	Cobalt Blue Light
		Finally, the iron rich zone with iron carbonate as siderite ore, the dominate mineral of the world.
		Cobaltite is a native mineral ore, cobalt arsenic sulfide, it's an opaque cool magenta color.
		China 2500 B/C on pottery, 500 B/C Roman, maybe earlier, they made a smalt after the Egyptian frit of copper.
	www.realcolorwheel.com /pigmentrcwbluelitopaque.htm (650 words)

	RockWare Support Forum -> [OLD] Cobaltite and the Ni-Co-Fe-As-S system
		Colleagues working on a mining-related problem have asked me to help locate thermo data (with enough pedigree that one can sort out what they mean) for cobaltite.
		I appreciate (though probably not enough) that there are solid-solution issues in the Fe-Co-As-S system, so any guidance that anyone may have about how all this might be handled would be great.
		(1) for the Ni-Co-Fe-As-S system (gersdorffite, rammelsbergite, safflorite, cobaltite, niccolite, etc.), particularly in the 150 to 250 deg C region,
	www.rockware.com /forum/index.php?showtopic=385 (240 words)

	Mineralogy of Ni-Cu-Platinum-Group Element Sulfide Ore in the 800 and 810 Orebodies, Copper Cliff South Mine, and P-T-X ...
		pentlandite, cobaltite, and hydrous silicates such as chlorite,
		the center of zoned cobaltite in veins or in disseminated sulfides.
		associated with PGM are tsumoite, galena, gersdorffite, cobaltite,
	econgeol.geoscienceworld.org /cgi/content/abstract/97/7/1471 (517 words)

	Gem, Rock, and Mineral Postage Stamps Featuring Cobaltite (Site not responding. Last check: 2007-10-11)
		Nomenclature: Named after cobalt, one of its constituent elements.
		The name cobalt is derived from the German kobold which means "goblin;" a reference to the health problems experienced by old-time miners when they encountered cobalt ore.
		Additional Notes: Cobaltite is similar to pyrite in terms of crystal shape, but is easily distinguished by color.
	stampmin.home.att.net /cobaltite.htm (73 words)

	Cobaltite Mineral Data
		Warning: this large pop-up is very compute intensive and may not work well with some computers.
		Giese R F, Kerr P F, American Mineralogist, 50 (1965) p.1002-1014, The crystal structures of ordered and disordered cobaltite, ordered, annealed after heating in a vacuum at 450 C
		II/D.18 - Cobaltite group, Cobaltite - Ullmannite - Tolovkite series
	webmineral.com /data/Cobaltite.shtml (254 words)

	Jerry Y
		Xu, J. Shi, Y.S. Lin, "Tubular lanthanum cobaltite perovskite type membranes for oxygen separation", J.
		Xu, J. Shi, Y.S. Lin, "Tubular lanthanum cobaltite perovskite-type membrane reactors for partial oxidation of methane to syngas", J.
		X. Qi, Y.S. Lin and S.L Swartz, "Electrical tranport and oxygen permeation properties of lantanum cobaltite membranes synthesized by different methods",Ind.
	alpha.che.uc.edu /lin.html (735 words)

	Definition of cobaltite - Merriam-Webster Online Dictionary
		Etymology: cobaltite, alteration of cobaltine, from French, from cobalt
		Learn more about "cobaltite" and related topics at Britannica.com
		Get the Top 10 Search Results for "cobaltite"
	www.m-w.com /cgi-bin/dictionary?book=Dictionary&va=cobaltite (50 words)

	Amazon.com: Electrowinning of cobalt from cobaltite concentrates (Report of investigations / United States Department ... (Site not responding. Last check: 2007-10-11)
		Amazon.com: Electrowinning of cobalt from cobaltite concentrates (Report of investigations / United States Department of the Interior, Bureau of Mines): Books: F. K Shelton
		This item is not eligible for Amazon Prime, but over a million other items are.
		Electrowinning of cobalt from cobaltite concentrates (Report of investigations / United States Department of the Interior, Bureau of Mines) (Unknown Binding)
	www.amazon.com /Electrowinning-cobaltite-concentrates-investigations-Department/dp/B0007HX1CU (370 words)

	[OLD] Cobaltite and the Ni-Co-Fe-As-S system
		RockWare Support Forum > Requests for data and references > [OLD] Cobaltite and the Ni-Co-Fe-As-S system
		Topic View Options for: [OLD] Cobaltite and the Ni-Co-Fe-As-S system
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	www.rockware.com /forum/index.php?act=Print&client=choose&f=44&t=385 (109 words)

	SILVER IN COBALTITE designer cab Silverhawk's designer gemstones.
		SILVER IN COBALTITE designer cab Silverhawk's designer gemstones.
		Click on the pictures below to see a larger view:
		Though I had a tough time capturing that in the photos; it closely resembles Oregon's pulsite, if you ask me. The cab has a nicely rounded dome of 6.5mm, a powerful designer 'shield' shape, and a super reflective polish both front and back.
	www.samsilverhawk.com /828cabs/silver.html (113 words)

	Tunnelling magnetoresistance of misfit layered cobaltite Ca3-xYxCo4O9 (x = 0, 0.1, 0.2)
		Tunnelling magnetoresistance of misfit layered cobaltite Ca3-xYxCo4O9 (x = 0, 0.1, 0.2)
		The negative MR ratio increases remarkably with decreasing temperature and with increasing x at temperatures below 20 K. We propose that the MR in the cobaltite can be explained by the magnetic tunnelling effect.
		In particular, reselling and systematic downloading of files is prohibited.
	stacks.iop.org /0953-8984/16/S5769 (245 words)

	COBALTITE - The color is silver (Site not responding. Last check: 2007-10-11)
		Cobaltite is associated with reflection, meditation and re-evaluation.
		It allows us to see all sides of an issue and therefore fosters tolerance.
		Would you like this Stone search to include Herbs?
	www.crownjewels.com /gembook/stones/COBALTITE.html (41 words)

	SME--VIRTUAL ATLAS OF OPAQUE AND ORE MINERALS (Site not responding. Last check: 2007-10-11)
		Polished block, plane polarized light, x 160, oil
		Cobaltite (cream-white, hard, left) is intergrown with, and included within, galena (blue-white, centre).
		A lath-shaped crystal of pyrrhotite (brown, top centre) and a lath of tetradymite (green-white, higher reflectance than galena, oriented north-south, centre) are also enclosed within galena.
	www.smenet.org /opaque-ore/plate40.htm (234 words)

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