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Topic: Ferberite

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Tungsten

	Ferberite
		Ferberite and huebnerite are both part of the wolframite series.
		Minerals with both Fe and Mn are referred to as wulframite.
		Ferberite is the rarer member of the wulframite series.
	www.museums.udel.edu /mineral/mineral_site/collection/alphabetical/F/ferberite.html (71 words)

	Ferberite Mineral Data
		Comments: Yellow cerotungstite-(Ce), with fl ferberite veins and whitish anthoinite.
		Standardized Intensity (100%) Reflection Spectra of Ferberite in Air
		Calculated Relative Intensity Colors of Ferberite in Air
	webmineral.com /data/Ferberite.shtml (277 words)

	FERBERITE (Iron Tungstate)
		Ferberite's iron content causes the dramatic differences between it and hubnerite (wolframite is of course intermediate).
		Ferberite tends to be fl colored, with a fl streak, is opaque with a nearly submetallic luster, is denser, has crystals with a different elongation and can be weakly magnetic.
		Ferberite is the rarer member of the series.
	mineral.galleries.com /minerals/sulfates/ferberit/ferberit.htm (253 words)

	Ferberite Gallery
		The ferberite is is lustrous fl with a sharp, well defined termination.
		This is a single rather monstrous crystal of ferberite, terminated all the way across the top edge, with accenting quartz and fluorite (more so on the backside, as well).
		This is a neat miniature specimen consisting of a doubly terminated quartz crystal, colorless and transparent, measuring 5.3 cm in length.
	www.mindat.org /gallery.php?min=1476 (670 words)

	HUBNERITE (Manganese Tungstate)
		Hubnerite is the Manganese rich end member while ferberite is the iron rich end member.
		Hubnerite is more common than ferberite but not nearly as common as wolframite.
		Ferberite, however, tends to be fl colored, with a fl streak, is opaque with a nearly submetallic luster, is denser and weakly magnetic.
	mineral.galleries.com /minerals/sulfates/huebneri/huebneri.htm (264 words)

	JBF Minerals: Ferberite (Wolframite) on Quartz, Yao Ga $200 (Site not responding. Last check: 2007-10-27)
		Ferberite (Wolframite) on Quartz, Yao Gang Xian Mine, Hunan Province, China
		A group of ferberite crystals nestled in a large bed of quartz.
		The ferberites are not lustrous, but they are perfectly formed and undamaged.
	www.jbfminerals.com /cgi-bin/scripts/oneitem.cgi?whichItemno=742 (44 words)

	JBF Minerals: Ferberite (Wolframite) and Arsenopyrite $450 (Site not responding. Last check: 2007-10-27)
		Ferberite (Wolframite) and Arsenopyrite on Quartz, Yao Gang Xian Mine, Hunan Province, China
		The ferberite is lustrous and well terminated on one end.
		The arsenopyrites are perched helter skelter on top of one another --- there may be some twinning going on.
	www.jbfminerals.com /cgi-bin/scripts/oneitem.cgi?whichItemno=743 (67 words)

	Bulletin No.7
		Specimens No. VII-1—No. VII-4, from Otome (Otomezaka) Mine, Yamanashi Pref., are pseudomorphs of ferberite after scheelite in its original octahedral form.
		Leudecke (1879) described it by mistake as a new species with this crystal habit and fl in colour with submetallic lustre, and named it " Reinite " after Professor Rein.
		FERBERITE (No. VII-4) (Pseudomorph after scheelite) Otome Mine, Yamanashi Pref.
	www.um.u-tokyo.ac.jp /publish_db/Bulletin/no07/no07012.html (622 words)

	Re: Ex-Minerals? by David Von Bargen on 6/05/2002 (Site not responding. Last check: 2007-10-27)
		There is a reason that in igneous rocks the dark minerals are referred to as pyriboles or even bipyriboles (it could be biotite, a pyroxene or an amphibole - or a mixture of these minerals).
		In the case of wolframite, there are two end members of the series, Hubnerite (manganese tungstate) and ferberite (iron tungstate).
		The composition where you would start refering to these chemical varieties could be from 10 to 25% of the minor element (there is no standard on this).
	www.rockhounds.com /rocknet/archive/messages/18844.shtml (180 words)

	Rocks & Minerals: The Yaogangxian tungsten mine: Yizhang County, Chenzhou, Hunan Province, China (Site not responding. Last check: 2007-10-27)
		The common occurrence of scheelite rather than ferberite is believed to reflect lithologic differences in host rocks.
		Ferberite and quartz veining in arenaceous, argillaceous country rocks was accompanied by the formation of sericitic micas, chlorite-family minerals, biotite, tourmaline, and topaz.
		Today, the production of ferberite and other metal concentrates is about 1,500 tons annually.
	www.findarticles.com /p/articles/mi_m0GDX/is_1_80/ai_n8691767/pg_2 (1288 words)

	Enlarged view of selected mineral (Site not responding. Last check: 2007-10-27)
		This cluster of purple fluorite has a fl ferberite crystal protruding up from the middle of it.
		It appears that an earlier frosted version of ferberite has a lustrous overgrowth of a later generation of ferberite.
		In addition, there is a littl twinned chalcopyrite crystal perched on the ferberite.
	www.davidkjoyceminerals.com /htmfiles/enlarge.asp?ProdID=2439 (73 words)

	LookSmart - Guides to Ferberite (Site not responding. Last check: 2007-10-27)
		Profiles ferberite with the location in Spain where the mineral is found, Strunz number, crystal system, and the formula.
		Displays a photo of ferberite, a list of its mineralogical proeprties, and the year it was discovered.
		Look at images of ferberite, its physical characteristics, and a list of locations where the mineral occurs.
	altavista.looksmart.com /eus712192/eus10123192/r?lt&pin=030827x088fe19661c3819f7e1& (196 words)

	ferberite
		It is one one end member of a solid solution where the Iron may be substituted for Manganese.
		Ferberite (the iron end member) and Heubnerite (MnWO4) is the manganese end member.
		The material with equal amounts of Fe and Mn is sometimes called Wolframite.
	www.theimage.com /mineral/ferberite/ferberite.html (60 words)

	Ferberiti/wolframiti Yaogangxian 2004
		Among these we have beautiful Ferberite xls and Wolframite xls.
		Further of the fine quality of these what is making the Yaoganxjiang specimens really unique are the beautiful association that often these specimen show with Quartz xls, varicolored fluorites, scheelite, arsenopyrite etc.The samples we present in this page have been extremely carefully selected.
		nice ferberite crystal with perfect double terminations on the back crystal of quartz: another interesting specimen!
	www.smartminerals.com /cina2004/cmin_ferberite_yago_1.htm (172 words)

	Ferberite - Encyclopedia, History, Geography and Biography
		Ferberite is a fl mineral composed of iron(II) tungstate (tungsten oxide), chemical formula FeWO
		This article about a specific mineral, mineraloid, or type of rock is a stub.
		This page was last modified 02:47, 20 Apr 2005.
	www.arikah.net /encyclopedia/Ferberite (73 words)

	Vol 95 No 1, Abstracts
		This deep gyre may represent a convective longitudinal roll superimposed on a large unicellular meteoric-hydrothermal system, producing a complex flow field with both radial and longitudinal components that is consistent with experimentally observed patterns of fluid convection in permeable media.
		Experimentally derived thermodynamic data for scheelite, ferberite, aqueous Ca, Fe, and W species, and other required aqueous species were critically evaluated and the most reliable data were adopted.
		Experimental data on the solubility of scheelite and the Ca/Fe ratio of fluids in equilibrium with scheelite + ferberite, and which are not used in parameterizing our model, generally agree with the results of calculations performed using our thermodynamic database within an order of magnitude.
	pangea.stanford.edu /research/ODEX/EG/papers/Abs95-1.htm (4942 words)

	Alan Guisewite's Mineral Collection Images: Miscellaneous Systematic Tungstates Page
		Ferberite's the iron-rich end of the ferberite - wolframite - huebnerite series.
		This ferberite cluster on muscovite is from the Yaogangxian Mine, Yizhang County, Hunan Province, China.
		This ferberite from Ward District, Boulder County, Colorado occurs as a fine druse.
	www.cs.cmu.edu /~adg/adg-pstimages.html (1005 words)

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