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arsenopyrite
mispickel
mispickel see arsenopyrite .
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Improved flotation of arsenopyrite by ultrasonic pretreatment
Magazine article from: Minerals & Metallurgical Processing; 5/1/2003; ; 700+ words
; ...Abstract Several flotation strategies for arsenopyrite have been developed over the last two...For refractory gold ores containing arsenopyrite, these flotation techniques have been...of the ore is necessary to enhance arsenopyrite flotation and thereby increase gold...
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Microbially induced separation of arsenopyrite and bioremediation of arsenic
Magazine article from: Minerals & Metallurgical Processing; 11/1/2009; ; 700+ words
; ...ferrooxidans in the beneficiation of arsenopyrite-containing multisulfides...microorganism. Bacterial adaptation to arsenopyrite and controlled bacterial adhesion...surfaces lead to selectivity in arsenopyrite separation. Bioremoval of...
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Planet Exploration Reports 5.4 Metres of 3.54 Grams Per Tonne Gold; and 13.22 Grams Per Tonne Gold Over a Metre, as Part of 4,400 Metre Drilling Program at the Upper Duck Zone ; - Total of 46 holes and 15,730 metres of drilling now completed on UDZ - Arsenopyrite and Silica relationship identified with high grade mineralization in UDZ - Winter drilling expected to commence in early 2008 with Goldcorp Red Lake Gold Mines as operator - Permitting underway for Advanced Exploration Program at Sidace Lake
Newspaper article from: CCNMatthews Newswire; 1/9/2008; 700+ words
; ...silicate-sulphide facies iron formation that is intensely mineralized with arsenopyrite. The best gold values are associated with needle clusters of arsenopyrite and abundant silicification. Sulphide and silica facies form favourable but...
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Gold incorporation into sulphide minerals from the Tatric Unit, the Western Carpathians, with respect to their chemical composition
Magazine article from: Journal of the Czech Geological Society; 1/1/2005; ; 700+ words
; ...pyrite are not as high as in arsenopyrite. Only if arsenic is present...Fe, As and S during the arsenopyrite and pyrite crystallization...in arsenian pyrites and arsenopyrites vary from sample to sample...gold-bearing sulphides; arsenopyrite; pyrite; Mssbauer spectroscopy...
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Reports from Autonomous University advance knowledge in science.
Newspaper article from: Mining & Minerals; 9/12/2008; 700+ words
; ...purity pyrite mineral (98.86%) and arsenopyrite mineral (content of 85.96% arsenopyrite, FeAsS; 11.84% pyrite, FeS2; 0...the species involved in the pyrite and arsenopyrite oxidation as pure mineral," investigators...
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Initial experiments on arsenical bronze production
Magazine article from: JOM; 3/1/2000; ; 700+ words
; ...prepared by fusing copper metal with arsenopyrite has been shown; conditions can be...copper ore and arsenic ore, such as arsenopyrite (FeAsS), or a copper ore containing...galena-- sphalerite (and, possibly, arsenopyrite in places) mixed lodestuff is widespread...
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Scientists at Monash University publish research in economic geology.(Report)
Newspaper article from: Economics Week; 9/26/2008; 700+ words
; ...evolution of gold-bearing pyrite and arsenopyrite from six orogenic gold deposits in...grain boundaries in the pyrite and arsenopyrite. These observations suggest that visible...alteration of preexisting pyrite and arsenopyrite. Textural observations and LA-ICP...
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The Quiruvilca District.(mining district in Peru)
Magazine article from: The Mineralogical Record; 7/1/1997; 700+ words
; ...chalcopyrite, galena, marcasite, arsenopyrite, covellite and wurtzite. The gangue...tetrahedrite-tennantite, marcasite, arsenopyrite and gratonite. Wurtzite occurs near...the other main sulfide mineral is arsenopyrite, with minor amounts of pyrite, sphalerite...
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Characterizing gold in refractory sulfide gold ores and residues
Magazine article from: JOM; 12/1/2002; ; 700+ words
; ...ores mainly in arsenian pyrite and arsenopyrite, where it occurs in both the chemically...occurs mostly in arsenian pyrite or arsenopyrite. The term "invisible" is applied...processed by roasting, whereby pyrite and arsenopyrite are oxidized to produce porous Fe...
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The Quiruvilca district
Magazine article from: Mineralogical Record; 7/1/1997; ; 700+ words
; ...chalcopyrite, galena, marcasite, arsenopyrite, covellite and wurtzite. The gangue...tetrahedritetennantite, marcasite, arsenopyrite and gratonite. Wurtzite occurs near...the other main sulfide mineral is arsenopyrite, with minor amounts of pyrite, sphalerite...
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arsenopyrite
Book article from: The Columbia Encyclopedia, Sixth Edition
arsenopyrite or mispickel , silver-white to steel-gray mineral with the metallic luster characteristic of a pyrite . It is a sulfarsenide...
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Arsenic (revised)
Book article from: Chemical Elements: From Carbon to Krypton
...nature Arsenic rarely occurs as a pure element. It is usually found as a compound. The most common ores of arsenic are arsenopyrite (FeAsS), orpiment (As2S3), and realgar (As4S4). These compounds are obtained as a by-product of the mining and...
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mispickel
Book article from: The Columbia Encyclopedia, Sixth Edition
mispickel see arsenopyrite .
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arsenic
Book article from: The Columbia Encyclopedia, Sixth Edition
...minute quantities of arsenic in compounds is the Marsh test . Arsenic occurs in many ores, including realgar, orpiment, and arsenopyrite , the chief commercial source. When it is prepared commercially from sulfide ores, e.g., arsenical pyrites, the ores...
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Arsenic
Book article from: Chemistry: Foundations and Applications
...Arsenic is the twentieth most abundant element in Earth's crust, averaging a concentration of approximately 2 ppm. Arsenopyrite (FeAsS) is its most common mineral. Arsenic occurs widely in nature, and most abundantly in sulfide ores and the products...
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