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Topic: Bournonite

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	Bournonite: Yaogangxian Mine, Chenzhou, Hunan Province, China.(Connoisseur's Choice) - HighBeam Encyclopedia
		Bournonite is a steel-gray to iron-fl metallic mineral with a luster that varies from brilliant to dull.
		Bournonite is almost unknown from the eastern United States, and most occurrences are as a generally massive, fine-grained accessory ore mineral.
		Arsenian bournonite occurred as small striated prisms with pyrite and zunyite at the Zuni mine, Silverton district, and as a relatively widespread ore mineral in the mines of Bear and Anvil Mountains, San Juan County.
	www.encyclopedia.com /doc/1G1-126852336.html (2204 words)

	o-p - Gitology
		Paragenèse: Anhydrite, Barytine, Bornite, Calcite, Chalcocite, Chalcopyrite, Covellite, Enargite, Fluorite, Galène, Gypse, Magnétite, Molybdénite, Pyrite, Quartz, Rhodochrosite, Rhodonite, Scheelite, Sphalérite, Tétrahédrite, Wolframite, Aikinite, Alabandite, Ankérite, Arsénopyrite, Bournonite, Djurléite, Dolomite, Emplectite, Famatinite, Greenockite, Gypse, Luzonite, Marcasite, Matildite, Arsenic, Proustite, Pyrrhotite, Sidérite, Stromeyerite, Vivianite.
		Paragenèse: Arsénopyrite, Dolomite, Enargite, Galène, Pyrite, Quartz, Rhodochrosite, Sphalérite, Stibnite, Tétrahédrite, Alabandite, Apatite, Arsenic, Barytine, Baumhauérite-2a, Bournonite, Calcite, Chalcopyrite, Chatkalite, Clinozoisite, Géocronite, Gratonite, Hutchinsonite, Jamesonite, Manganaxinite, Marcasite, Orpiment, Réalgar, Robinsonite, Scheelite, Séligmannite, Stannite, Wurtzite.
		Paragenèse: Calcite, Chalcopyrite, Dolomite, Galène, Pyrite, Quartz, Rhodochrosite, Sphalérite, Tétrahédrite, Acanthite, Anhydrite, Arsénopyrite, Barytine, Bornite, Boulangérite, Bournonite, Diaphorite, Géocronite, Gypse, Hubnérite, Jamesonite, Miargyrite, Orpiment, Polybasite, Pyrargyrite, Réalgar, Rhodonite, Stibnite.
	www.micromineral.org /gito/o-p.html (1245 words)

	Bournonite
		This sample of bournonite is displayed in the Smithsonian Museum of Natural History.
		Bournonite is an sulfide mineral of copper, antimony and lead with the composition CuPbSbS
		This sample of bournonite is about 11x11 cm and is from Quiruvilea, La Libertad, Peru.
	hyperphysics.phy-astr.gsu.edu /hbase/minerals/bournonite.html (55 words)

	Bournonite
		Bournonite is named for the French mineralogist, J. de Bournon.
		On fresh surfaces, bournonite has a bright metallic luster although a dull fl tarnish quickly develops.
		Bournonite is commonly cyclically twinned forming a "cog-wheel" appearance.
	www.museums.udel.edu /mineral/mineral_site/collection/alphabetical/B/bournonite.html (35 words)

	New Page 0
		OKE-212 Jamesonite and Chalcopyrite on Bournonite with Quartz Yaogangxian Mine, Bai Shi Du, Chen Xhou, Yizhang County, Hunan Prov., China.
		The bournonite is totally coated by jamesonite needles and chalcos of nice form.
		Beautiful floater crystal of bournonite with one small quartz crystal and a tan platy unknown mineral which looks very much like mica (it is not…hardness is too great).
	www.geologicdesires.com /chinesemineralsbournonitespecimenspage.htm (1765 words)

	Bournonite (Site not responding. Last check: 2007-10-20)
		This sample of bournonite is displayed in the Smithsonian Museum of Natural History.
		Bournonite is an sulfide mineral of copper, antimony and lead with the composition CuPbSbS
		This sample of bournonite is about 11x11 cm and is from Quiruvilea, La Libertad, Peru.
	230nsc1.phy-astr.gsu.edu /hbase/minerals/bournonite.html (55 words)

	[No title]
		(1964), bournonite by Jakes (1963) and horobetsuite by Ralbovsky and Kristin (1975).
		Intergrowths of bournonite and tetrahedrite are usually found in aggregates of Fe-dolomite.
		Chemical composition of bournonite and its graphical representation are given in Tables 3 and 3a and Fig.
	www.fns.uniba.sk /prifuk/casopisy/geol/199953/chovan.txt (3364 words)

	Turning Red Lead Into Gold (Site not responding. Last check: 2007-10-20)
		Bournonite, also known as cog-wheel ore, was named by Jameson in 1805 for J. de Bournon.
		Petterd's first reference of bournonite is in 1893 quoting Gould's report to the Royal Society of Tasmania (1871) where bournonite occurs in patches near the junction of the slates and granite on the south-east shores of King Island.
		Bournonite has been recorded from several localities in the Zeehan region, most notably from a tribute of the Argent Company, an occurrence recorded last century, from Brown and Turner's Prospect near the No. 6 Montana lode as lumps up to 5cm in length, and from the Swansea and Western mines.
	www.crocoite.com /redleadintogold/bournonite.htm (236 words)

	BOURNONITE (Copper Lead Antimony Sulfide)
		Bournonite is also called "cog wheel ore" because of the cog wheel shape that the twinned crystals form.
		Twinning is common in bournonite and if a crystal repeatitively twins it can form a type of twin called a trilling.
		The trilling is composed of four "twins" or crystals connected in a plane and forms a wheel with a jagged edge that resemble the teeth of a cog wheel.
	mineral.galleries.com /minerals/sulfides/bournoni/bournoni.htm (180 words)

	Bournonite (Site not responding. Last check: 2007-10-20)
		Bournonite is an unusual copper sulfide, named for the French baron Louis de...
		Bournonite is an sulfide mineral of copper, antimony...
		Bournonite is sought after by collectors because it...
	www.toprocks.net /MineralList/12/Bournonite.asp (278 words)

	Bournonite, Excellent Piece, Peru; 4.3x3.5x3 cm. - Richard Dale Minerals
		It was hard to decide which side to photograph...
		The specimen is nearly solid bournonite, made up of 1 cm.+ crystals irregularly stacked, with spaces in-between.
		Bournonite alone is richer & more interesting on the other side, but the pictured view has a scattered druse of quartz that brings out the textures.
	www.dalerocks.com /8/4886.htm?30 (52 words)

	Trinity Mineral Co - The 2001 Munich Show
		Several wheel cog crystals of bournonite to 1.1 cm across are set on matrix cosnisting of crystalline pyrite.
		A dozen or so crystals of bournonite to 1 cm across are set on matrix consisting of crystalline pyrite, sphalerite and minor jamesonite.
		Several wheel cog crystals of bournonite to 0.7 cm across are set on matrix cosnisting of crystalline pyrite.
	www.trinityminerals.com /ms2001/rom.shtml (959 words)

	Bournonite Gallery
		A rather unusual large plate of bournonite crystals, all showing sharp UNTWINNED crystals to 2.25 cm in size.
		There was a find of his relatively rare copper sulfosalt about 6 years ago at Machacamarca, and this piece is one of the very best miniatures found.
		The Bournonite crystals are sharp and lustrous but that lie flat against a micro crystallized Quartz and Pyrite matrix.
	www.mindat.org /gallery.php?min=741 (590 words)

	Alan Guisewite's Mineral Collection Images: Lead Minerals Page
		Bournonite (lead copper antimony sulfide) is often called "cogwheel ore" because of its multiply-twinned radiating crystals.
		Bournonite is sometimes used as an ore of lead (42.5%), copper, or antimony.
		An excellent miniature of bournonite (larger image, top right), anhydrite (larger image, bottom left), and drusy pyrite (larger image, bottom right) from the Naica Mine, Chihuahua, Mexico.
	www.cs.cmu.edu /~adg/adg-plimages.html (6242 words)

	The technology of processing antimony-bearing ores
		The possibility of separating contaminant antimony minerals depends on the mineralogy of the ores and the flotation properties of the antimony minerals.
		The flotation properties of stibnite jamesonite, gudmundite, boulangerite and bournonite have been studied in laboratory experiments.
		Information has been obtained which is fundamental to assessment of the possibilities for separating each of these antimony minerals in normal process environments for beneficiation of complex ores.
	epubl.luth.se /avslutade/0348-8373/72/index.html (124 words)

	Minerals; Rock and Mineral Specimens; Crystals; Mineral Dealer; Chinese Minerals; Rock Shops; Gems and Minerals; ... (Site not responding. Last check: 2007-10-20)
		The specimen consists of a large doubly terminated bournonite crystal, this measuring 6.6 x 3 x 8.2 cm in size, the crystal completely matted or coated by fibrous acicular metallic hairy jamesonite.
		There is also a second generation of bournonite scattered about the jamesonite/chalcopyrite/bournonite crystal, these latter bournonites measuring to 12 mm in length.
		There is a second generation of metallic prismatic terminated bournonite crystals to 12 mm in length.
	www.danweinrich.com /china100406.htm (2556 words)

	Mineral Specimen for sale of Bournonite on Pyrite from Cavnic (Kapnik), Maramures, Romania. (Site not responding. Last check: 2007-10-20)
		Bournonite on Pyrite from Cavnic (Kapnik), Maramures, Romania.
		This mineral specimen of Bournonite on Pyrite from Cavnic (Kapnik), Maramures, Romania is available for sale from John Betts - Fine Minerals, mineral dealer located in New York City, New York.
		The bournonite crystals are all complex cogwheel-twins with striated prism faces.
	www.johnbetts-fineminerals.com /jhbnyc/gifs/36889.htm (177 words)

	Bournonite
		Mineral Notes: Bournonite is a popular collector mineral because of the striking silvery-grey crystals which have a strong tendency to form radiaiting (cogwheel-like) aggregates.
		For this reason Cornish miners, where particulalry striking specimens were once found, knew the mineral as cogwheel ore. Similarly, in Germany the mineral is known as Radelrz, or wheel ore.
		Description: A solid matrix of Bournonite on whose upper surface lie several overlapping crystals.
	www.wildaboutrocks.com /prod2683.htm (117 words)

	Bournonite (Site not responding. Last check: 2007-10-20)
		Bournonite is an unusual copper sulfide, named for the French baron Louis de Bournon, a famous mineralogist, who wrote a dissertation on Calcite and Aragonite.
		Bournonite is for all practical purposes stable in a normal household environment.
		Bournonite specimens can be brittle and should be handled with care like any other mineral specimen.
	www.hedegaard.com /Minerals/Species/Bournonite.html (210 words)

	UCSB Geology-the Bancroft Collection
		Bournonite was named after the French mineralogist and crystallographer Count J.L. de Bournone, who first determined the chemical composition in 1805.
		It is a hydrothermal ore mineral which contains forty-two percent lead, thirteen percent copper, and twenty four percent antimony.
		Lustrous fl bournonite crystals of good size and surrounded by white quartz crystals were the "trademark" of Liskeard, and are considered to be the world's finest.
	bancroft.geol.ucsb.edu /-Overview/35-Overview.html (110 words)

	SME--VIRTUAL ATLAS OF OPAQUE AND ORE MINERALS (Site not responding. Last check: 2007-10-20)
		Chalcopyrite (yellow, centre top) forms an incomplete rim to sphalerite and is associated with bournonite (white rim to chalcopyrite, centre top) and tetrahedrite (white, centre top right).
		At this magnification, galena, tetrahedrite group minerals and bournonite cannot easily be distinguished in plane polarized light.
		Sphalerite (grey, right) is partially rimmed by chalcopyrite (yellow, bottom left) and bournonite (blue-white, centre)Tetrahedrite (light brown-grey, centre) is enclosed within a rim of bournonite (blue-white), which has a slightly lower reflectance, but is better polished than the isolated crystal of galena (white, centre left).
	www.smenet.org /opaque-ore/plate63.htm (241 words)

	Mineral Classics - Bolivian Bournonite
		The Bournonite crystal is large, sharp, lustrous, well-formed, highly displayable and damage free.
		This "cabinet" size specimen is one the finest matrix Bournonite specimens that I have seen from Bolivia.
		This piece has an interesting combination of a fine, large, sharp, lustrous, tabular crystal and a "stem" of Quartz and Siderite extending from the bottom of the crystal which acts as a natural stand.
	www.minclassics.com /bolbourn.html (1297 words)

	JBF Minerals: Bornite and Galena covered with Calcite $75
		There are two large bournonites on this specimen from Naica.
		This piece also features an usual mass of rounded galena in the back.
		Bournonites are difficult to obtain from this location.
	www.jbfminerals.com /html/items/1118.html (74 words)

	Mineral specimen: Bournonite - Mineral specimens Search Results - Fabre Minerals
		The crystals are doubly terminated and they are pretty well placed and aerial on the Quartz and Pyrite matrix.
		That is the word one has to use to describe this group of large Bournonite crystals, which are well defined and have all the faces, except one that has a contact, well defined.
		The metallic brilliance, the slightly blue color, and the Quartz crystal that stands upright among them all make it a great composition.
	www.fabre-minerals.com /search_results.php?LANG=EN&MineralSpeciment=Bournonite (263 words)

	Spathfluor and Multiaxes catalog
		Top » Catalog » France » Bournonite St LaureBournonite St »
		Bournonite St LaureBournonite St Cerusite - Mayre - Ardèche (3)
		Use keywords to find the product you are looking for.
	www.spathfluorminerals.com /product_info.php/products_id/364/language/en (65 words)

	[No title]
		Reproduction of text and photos prohibited without permission of author.
		- Bournonite on dolomite and siderite - Mine Brosso – Piemonte - Italy.
		Classic old specimen found in 1970 and now undiscoverable.
	web.tiscali.it /mmacchieraldo/brossoes.htm (191 words)

	Gem, Rock, and Mineral Postage Stamps Featuring Bournonite (Site not responding. Last check: 2007-10-20)
		Nomenclature: Named after the French mineralogist, J. de Bournon.
		Additional Notes: Bournonite frequently occurs in twinned crystals that have a jagged, wheel-like shape.
		For this reason, bournonite is also referred to as "wheel ore" and "cog-wheel ore."
	stampmin.home.att.net /bournonite.htm (56 words)

	The Arkenstone: Fine Mineral Specimens (Site not responding. Last check: 2007-10-20)
		In spite of the minor, but specimen wide damage, this bournonite is a very displayable piece showing classic cogwheel twinning, and from THE top worldwide locality for the species.
		As i said, it clearly and dramatically exhibits the classical “cogs wheel” crystallography as well as bright metallic luster, which has made this the noted locality for bournonite for over 100 years now.
		If this piece was damage free, at least one zero could be added to the price.
	www.irocks.com /wvt1.html (761 words)

	Selected Specimens
		Click on any of the following thumbnails to view a larger image of the specimen.
		Very sharp, twinned "cogwheel" shaped crystals of bournonite are scattered on this matrix which is a crust of interlocking arsenopyrite crystals.
		It appears as though a matt of arsenopyrite crystals were draped over calcite or dolomite rhombs and then the carbonates etched away.
	www.davidkjoyceminerals.com /htmfiles/thumbpg.asp?TitleID=277 (212 words)

	Bournonite Mineral Data
		Comments: Bright, blocky crystalline aggregate of steel gray bournonite crystals.
		Standardized Intensity (100%) Reflection Spectra of Bournonite in Air
		Calculated Relative Intensity Colors of Bournonite in Air
	webmineral.com /data/Bournonite.shtml (270 words)

	Definition of bournonite - Merriam-Webster Online Dictionary
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		Learn more about "bournonite " and related topics at Britannica.com
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	www.miriamwebster.com /dictionary/bournonite (31 words)

	Mineral Specimen: Tetrahedrite pseudo Bournonite - Fabre Minerals
		Mineral Specimen: Tetrahedrite pseudo Bournonite - Fabre Minerals
		BB9C6: Analysis some times gives agreeable surprises, as in this case: a really sharp Tetrahedrite pseudomorphosed by Bournonite.
		Plus this specimen is very well placed on its Fluorite matrix.
	www.fabreminerals.com /search_show.php?SECTION=RSCN&CODE=BB9C6 (87 words)

	Bournonite - complete list of mineral names
		Accueil " Catalogue " France " Bournonite St Laurent-le-Minier...
		Barytine - ChÃ¢tel-Guyon (9) Bournonite St Laurent-le-Minier (13)...
		NOTE: Please contact us right away if you'd like to make any changes to your listing.
	www.absoluterocknet.com /complete_list_of_mineral_and_crystal_names/Bournonite.asp (353 words)

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