chalcopyrite

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chalcopyrite

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.

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chalcopyrite

World Encyclopedia | 2005 | Â© World Encyclopedia 2005, originally published by Oxford University Press 2005. (Hide copyright information) Copyright

chalcopyrite (copper pyrites) Opaque, brass-coloured, copper iron sulphide (CuFeS₂); the most important copper ore. It is found in sulphide veins and in igneous and contact metamorphic rocks. The crystals are tetragonal but often occur in masses. Hardness 3.5–4; r.d. 4.2.

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	Leaching of sulfidized chalcopyrite with H(2)SO(4)-NaCl-O(2) Magazine article from: Metallurgical and Materials Transactions; 4/1/2003; ; 700+ words ; The recovery of copper from chalcopyrite by leaching is complex not only...the leaching of sulfidized chalcopyrite is very attractive because of...the leaching of the untreated chalcopyrite. In this work, the results...
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	Microbially enhanced removal of pyrite and chalcopyrite from oxide gangue minerals with reference to desulfurization of tailings Magazine article from: Minerals & Metallurgical Processing; 11/1/2004; ; 700+ 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...
	A recipe for microwave semiconductors. (microwave used to make batches of chalcopyrites) (Brief Article) Magazine article from: Science News; 6/19/1993; 628 words ; ...easier way to make chalcopyrites, materials used in...extremely thin films of chalcopyrite and layer them to...semiconductors. Making the chalcopyrite is the hard part...elements to crystalline chalcopyrite. In the June 11 SCIENCE...they can now make chalcopyrites in just three minutes...
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	Electronic structure, linear, nonlinear optical susceptibilities and birefringence of CuInX.sub.2 (X = S, Se, Te) chalcopyrite-structure compounds.(Research article) Magazine article from: PMC Physics B; 5/19/2008; ; 700+ words ; ...10, 11]. Ternary chalcopyrite appear to be promising...The [math omitted] chalcopyrites concerned in this...structures, such as chalcopyrites, the MTA is a poor...dynamical properties of chalcopyrites are well known and...properties of the chalcopyrite semiconductor CuInS...
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