chalcopyrite
From: The Columbia Encyclopedia, Sixth Edition
|
Date: 2008
chalcopyrite or copper pyrites , brass-yellow mineral, sometimes with an iridescent tarnish. It is a sulfide of copper and iron, CuFeS 2 . It crystallizes in the tetragonal system but is usually found in the massive form. Chalcopyrite is of primary origin and occurs in igneous and metamorphic rocks and in metalliferous veins. It is an important ore of copper and is widely distributed throughout the world.
Author not available, CHALCOPYRITE.,
The Columbia Encyclopedia, Sixth Edition 2008
The Columbia Encyclopedia, Sixth Edition. Copyright 2008 Columbia University Press
For permission to reuse this article, contact Copyright Clearance Center.
Related articles from HighBeam Research:
|
Copper Leaching from Chalcopyrite Concentrates
JOM; 7/1/2005; Wang, Shijie; 2976 words;
Chalcopyrite (CuFeS^sub 2^) is one of the most abundant copper ... processes have been developed to leach copper from chalcopyrite concentrates. These processes recover copper via hydrometallurgical leaching of the copper component of chalcopyrite concentrates, followed by solvent extraction and ...
|
|
Microbially enhanced removal of pyrite and chalcopyrite from oxide gangue minerals with reference to desulfurization of tailings
Minerals & Metallurgical Processing; 11/1/2004; Patra, Partha; Natarajan, K A; 5224 words;
... ofsulfide minerals, such as pyrite and chalcopyrite ,from oxide gangue minerals, quartz ... effective separation of pyrite and chalcopyrite from quartz and calcite from the viewpoint ... above scenario, a system of pyrite and chalcopyrite along with quartz and calcite was chosen ...
|
|
Leaching of sulfidized chalcopyrite with H(2)SO(4)-NaCl-O(2)
Metallurgical and Materials Transactions; 4/1/2003; Padilla, R; Zambrano, P; Ruiz, M C; 2768 words;
The recovery of copper from chalcopyrite by leaching is complex not only ... contrary, the leaching of sulfidized chalcopyrite is very attractive because of ... the leaching of the untreated chalcopyrite. In this work, the results of ...
|
|
|
Effect of microwave treatment on the flotation and magnetic separation properties of pyrite, chalcopyrite, galena and sphalerite
Minerals & Metallurgical Processing; 8/1/2007; Can, N M; Bayraktar, I; 3122 words;
... some sulfide minerals, namely, pyrite, chalcopyrite, galena and sphalerite, were studied ... The results revealed that pyrite, chalcopyrite and galena were heated very quickly ... 130C. The floatability of pyrite, chalcopyrite and galena were decreased when microwave ...
|
|
|
Pyrometric Temperature and Size Measurements of Chalcopyrite Particles during Flash Oxidation in a Laminar Flow Reactor
Metallurgical and Materials Transactions; 4/1/2005; Laurila, Toni; Oikari, Risto; Joutsenoja, Timo; Mikkola, Petteri; Et al; 4850 words;
... and size measurements of individual chalcopyrite particles (CuFeS^sub 2^) during flash ... reaction times (up to 0.17 seconds) on chalcopyrite particle temperature and size distributions ... temperature and size of individual chalcopyrite (CuFeS^sub 2^) particles in the size ...
|
|
|
Sulfidation of chalcopyrite with elemental sulfur
Metallurgical and Materials Transactions; 2/1/2003; Padilla, R; Rodriguez, M; Ruiz, M C; 911 words;
The sulfidation of chalcopyrite concentrate with elemental sulfur ... showed that the sulfidation of chalcopyrite forms CuS and FeS^sub 2^ at temperatures ... were formed. The sulfidation of chalcopyrite proceeds mainly through the gaseous ...
|
|
|
Kinetics of the sulfidation of chalcopyrite with gaseous sulfur
Metallurgical and Materials Transactions; 2/1/2003; Padilla, R; Olivares, E; Ruiz, M C; Sohn, H Y; 750 words;
The sulfidation of chalcopyrite with gaseous sulfur in the temperature ... a shrinking core of unreacted chalcopyrite surrounded by successive layers ... the reaction occurring at the chalcopyrite-pyrite interface, resulting in ...
|
|
A recipe for microwave semiconductors. (microwave used to make batches of chalcopyrites) (Brief Article)
Science News; 6/19/1993; 285 words;
... found a faster and easier way to make chalcopyrites, materials used in semiconductors ... Scientists prepare extremely thin films of chalcopyrite and layer them to build semiconductors. Making the chalcopyrite is the hard part, though. The conventional ...
|
|
|
Reactions of gold and sulfide minerals in cyanide media
Minerals & Metallurgical Processing; 11/1/2002; Deschenes, G; Pratt, A; Riveros, P; Fulton, M; 5553 words;
Abstract The effect of pyrite, pyrrhotite, chalcopyrite, realgar and arsenopyrite on gold dissolution ... order: realgar > pyrrhotite > chalcopyrite > pyrite > arsenopyrite. The ... reactive (Hedley and Tabachnick, 1958). Chalcopyrite has the lowest solubility among the ...
|
|
|
Thermoanalytical study on the oxidation of sulfide minerals at high temperatures
Minerals & Metallurgical Processing; 11/1/2007; Pérez-Fontes, S E; Pérez-Tello, M; Prieto-López, L O; Brown, F; Castillón-Barraza, F; 3851 words;
... experimental study on the oxidation of chalcopyrite (CuFeS^sub 2^), pyrite (FeS^sub 2 ... oxidation of pyrite (Jorgensen, 1981) and chalcopyrite (Jorgensen, 1983) particles were conducted ... on the oxidation of natural pyrite, chalcopyrite and bornite in a laminar-flow reactor ...
|
|
|
Effect of microwave pretreatment on the liberation characteristics of a massive sulfide ore
Minerals & Metallurgical Processing; 5/1/2004; A, Orumwense O; T, Negeri; R, Lastra; 3966 words;
... followed by galena with 73% liberation and chalcopyrite with 63% liberation. A fine feed size ... deciding the applicable level of heating. Chalcopyrite and galena, which are readily affected ... sphalerite 13.38%, galena 3.02% and chalcopyrite 1.18%. While the predominant gangue ...
|
|
|
Kennecott's million-ton test heap - The active leach program
Minerals & Metallurgical Processing; 2/1/2006; Schlitt, W Joseph; 9692 words;
... results of Kennecott's large-scale chalcopyrite leach program are presented. The program ... averaging 0.28% Cu, mostly in the form of chalcopyrite. The heap was leached for 18 months ... averaging 0.26% Cu, also predominantly chalcopyrite. This lift was leached for 13 months ...
|
|
Famous Mineral Localities: DAL'NEGORSK PRIMORSKIY KRAY RUSSIA.
The Mineralogical Record; 1/1/2001; Grant, Raymond Wilson, Wendell E.; 8280 words;
... plus fine examples of apophyllite, chalcopyrite, galena, hedenbergite, manganaxinite ... mines, and at the latter also with chalcopyrite. Boulangerite [Pb.sub.5][Sb.sub.4 ... minerals in the First Sovietskiy mine. Chalcopyrite [CuFeS.sub.2] Chalcopyrite is present ...
|
|
The Krásno Sn-W ore district near Horní Slavkov: mining history, geological and mineralogical characteristics/Sn-W rudní revír Krásno u Horního Slavkova - historie tezby, geologická a mineralogická charakteristika
Journal of the Czech Geological Society; 1/1/2006; Beran, Pavel; Sejkora, Jirí; 18806 words;
... region based on detailed geological maps at the scale of 1 : 5000. Publications ... at other places with molybdenite, chalcopyrite, covellite and luzonite. Microscopic ... extraordinary level at 500 m a.s.l. Chalcopyrite Jantsch (1854, 1858), Krejc (1855 ... 1892) and other authors described ...
|
|
|
Kinetics and mechanism of leaching synthetic calaverite in cyanide solutions
Minerals & Metallurgical Processing; 8/1/2006; Deschênes, G; Pratt, A; Fulton, M; Guo, H; 3023 words;
... nitrate and sulfide minerals (pyrite and chalcopyrite) were among the leaching parameters ... kinetics of calaverite. The effect of chalcopyrite and pyrite was also studied. Surface ... concentrate containing 59.7% pyrite and 0.3% chalcopyrite. The chalcopyrite sample was 86.4 ...
|
See all results from premium newspaper and magazine articles, images, maps and more at HighBeam Research.
Related articles from newspapers, magazines and other sources:
Missouri Mineral Locality Index.
Rocks & Minerals; 3/1/1998; SHERWOOD, MARK D. WILLIAMS, GLENN A.; 12379 words;
|
Wisconsin Mineral.
Rocks & Minerals; 11/1/1998; CORDUA, WILLIAM S.; 13107 words;
|
Minerals of the Gilman District and Eagle Mine Eagle County, Colorado.
Rocks & Minerals; 9/1/2003; Warren, William J., Jr. Pedersen, Ed; 18182 words;
|
Implications of polishing techniques in quantitative x-ray microanalysis.
Journal of Research of the National Institute of Standards and Technology; 11/1/2002; Remond, Guy Nockolds, Clive Phillips, Matthew Roques-Carmes, Claude; 12040 words;
|
New Hampshire: mineral locality index.
Rocks & Minerals; 7/1/2005; Smith, Arthur E.; 9628 words;
|
The Mineralogy, Geology, and Mining History of the Telluride District, San Miguel County, Colorado.
Rocks & Minerals; 11/1/2000; RAINES, ED; 18323 words;
|
MINERALS OF THE Pea Ridge Mine, Washington County, Missouri.
Rocks & Minerals; 3/1/1998; NUELLE, LAURENCE M.; 3073 words;
|
Tri-State and Viburnum Trend Districts.
Rocks & Minerals; 11/1/1997; LASMANIS, RAYMOND; 11614 words;
|
Wyoming mineral locality index.
Rocks & Minerals; 11/1/2001; Hausel, W. Dan Jacobson, Mark I; 9434 words;
|
COLORADO GOLD.
Rocks & Minerals; 7/1/1997; RAINES, ED; 13805 words;
|
|
|