arsenopyrite

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arsenopyrite

The Columbia Encyclopedia, Sixth Edition | 2008 | The Columbia Encyclopedia, Sixth Edition. Copyright 2008 Columbia University Press. (Hide copyright information) Copyright

arsenopyrite or mispickel , silver-white to steel-gray mineral with the metallic luster characteristic of a pyrite . It is a sulfarsenide of iron, FeAsS, crystallizing in the orthorhombic system and occurring also in massive form. It is widely distributed and is an important source of arsenic. Often it is found associated with other minerals and ores of lead and tin. Saxony, Sweden, Cornwall, and various parts of the United States have important deposits.

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arsenopyrite

A Dictionary of Earth Sciences | 1999 | | © A Dictionary of Earth Sciences 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

arsenopyrite (known historically as mispickel) Mineral, FeAsS; sp. gr. 5.9–6.2; hardness 5.5–6.0; monoclinic; silver-grey to white, often with a tarnish; dark greyish or black streak; metallic lustre; crystals prismatic, often striated, can also be massive and granular; cleavage distinct {101}; occurs in high- to moderate-temperature mineral veins in association with gold, ores of tin, tungsten, galena, and quartz, and also disseminated in limestones, dolomites, gneisses, and pegmatites. It is the principal source of arsenic compounds used for pest control, for the manufacture of dyes and chemicals, and in leather treatment.

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AILSA ALLABY and MICHAEL ALLABY. "arsenopyrite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 9 Jul. 2009 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "arsenopyrite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (July 9, 2009). http://www.encyclopedia.com/doc/1O13-arsenopyrite.html

AILSA ALLABY and MICHAEL ALLABY. "arsenopyrite." A Dictionary of Earth Sciences. 1999. Retrieved July 09, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-arsenopyrite.html

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wolframite

A Dictionary of Earth Sciences | 1999 | | © A Dictionary of Earth Sciences 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

wolframite Ore mineral for tungsten, with the formula (Fe,Mn)WO4; sp. gr. 7.0–7.5; hardness 5.0–5.5; monoclinic; grey-black to brownish-black; brownish black streak; metallic lustre; crystals normally tabular, prismatic, often bladed, also occurs granular and massive; cleavage perfect {010}; occurs in high-temperature hydrothermal veins, quartz veins, and pegmatites, associated with granitic rocks, with cassiterite, arsenopyrite, tourmaline, scheelite, galena, sphalerite, and quartz.

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AILSA ALLABY and MICHAEL ALLABY. "wolframite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 9 Jul. 2009 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "wolframite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (July 9, 2009). http://www.encyclopedia.com/doc/1O13-wolframite.html

AILSA ALLABY and MICHAEL ALLABY. "wolframite." A Dictionary of Earth Sciences. 1999. Retrieved July 09, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-wolframite.html

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Free newspaper and magazine articles

Free Article Ferberite.(tungstate)
Magazine article from: Rocks & Minerals; 7/1/1998
Free Article Cassiterite.
Magazine article from: Rocks & Minerals; 7/1/1997
Free Article Geology of the Florencia gold--telluride deposit (Camaguey, Cuba) and some metallurgical considerations.
Magazine article from: Earth Sciences Research Journal; 12/1/2006

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Related articles from newspapers, magazines, and more

Ferberite.(tungstate)
Magazine article from: Rocks & Minerals; 7/1/1998; ; 700+ words ; ...has been the tungsten mine at Panasqueira, Portugal (fig. 1), with its unusually high-quality ferberite, apatite, quartz, arsenopyrite, and cassiterite. This vein system has been the source of literally thousands of specimens for collectors and museums and... Read more
Cassiterite.
Magazine article from: Rocks & Minerals; 7/1/1997; ; 700+ words ; ...lustrous, sharply formed, and typically twinned crystals--commonly on matrix with such interesting associated minerals as arsenopyrite, wolframite-ferberite, apatite, topaz, or scheelite--are actively sought by collectors. Fortunately, it is generally available... Read more
Geology of the Florencia gold--telluride deposit (Camaguey, Cuba) and some metallurgical considerations.
Magazine article from: Earth Sciences Research Journal; 12/1/2006; 700+ words ; ...largely consist of native gold, telluride and pyrite, where arsenopyrite is almost absent. Traces of lead, zinc and cadmium are present...The presence of minerals of the telluride group and the arsenopyrite absence in the ores, playing the pyrite an important part... Read more
Risk of arsenic contamination in groundwater: response from Chakraborti et al.(Correspondence)
Magazine article from: Environmental Health Perspectives; 1/1/2004; ; 700+ words ; ...Acharyya and Shah stated that pyrite or arsenopyrite is absent or very rare in aquifer sediments...sediments to prove the absence of pyrite or arsenopyrite. Does citing these two published articles...atmospheric oxygen. Under such conditions the arsenopyrite/pyrite grains now known to be present... Read more
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Magazine article from: Rocks & Minerals; 1/1/2009; 700+ words ; ...66; New York, 251; Utah, 57 Arizona, fumarole deposits, 534-44 Arkansas, diamonds, 502-7 Arseniosiderite, Utah, 57, 455 Arsenopyrite, New York, 227; Utah, 56 Artist Irwin David Hoffman (1901-1989), S. Robinson, 428-30 Atacamite, New York, 227 Aurichalcite... Read more
Fascination of the Minerals from China.(Audiovisual Review)
Magazine article from: Rocks & Minerals; 1/1/2005; ; 684 words ; ...important specimen-producing localities during the past decade. For example, in less than a minute I was able to learn that an arsenopyrite specimen I had acquired several years ago that was labeled only as coming from the Yiaoguans Hen mine in Hunan is actually... Read more
Unusual Graphite Crystals FROM THE LIME CREST QUARRY, SPARTA, NEW JERSEY.
Magazine article from: Rocks & Minerals; 9/1/1997; ; 700+ words ; ...crystals of phlogopite, pyrite, pyrrhotite, molybdenite, arsenopyrite, sphalerite, and a few unidentified species. The identities of the pyrrhotite, pyrite, molybdenite, and arsenopyrite were confirmed by the use of energy dispersive spectroscopy... Read more
Wyoming mineral locality index.
Magazine article from: Rocks & Minerals; 11/1/2001; ; 700+ words ; ...Mining Syndicate, Telephone--North America, and Utopia mines: arsenopyrite, pyrite, and gold (native) and platinum values. [FIGURE 3...of Garrett, 32 miles W of Wheatland (T. 25 N., R. 73 W.): arsenopyrite, berthierite, and pyrite. George-Funk mica and Funk mica... Read more
Index volume 76 (2001).
Magazine article from: Rocks & Minerals; 1/1/2002; 700+ words ; ...Wyoming, 238 Anatase, Colorado, 312; Russia, 30 Ancylite-(Ce), Russia, 31 Ancylite, Colorado, 306 Anhydrite, Colorado, 322 Arsenopyrite, Colorado, 320 Art, see Robinson, S. Astrophyllite, Colorado, 305; Russia, 27 Atacamite, Russia, 57 Aurichalcite, Colorado... Read more
Index 2005 Volume 80.
Magazine article from: Rocks & Minerals; 1/1/2006; 700+ words ; ...Michigan, 168 Arctic mine, Michigan, 176 The Arrowhead Prospect, Slick Rock, San Miguel County, Colorado, P. E. Haynes, 358-59 Arsenopyrite, Hunan, China, 51 Astrophyllite, Colorado, 319 August 2005 Mount Mica Update, G. Freeman, 499-510 Aurichalcite, 79 Mine... Read more

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