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Chalcopyrite Wikipedia

Chalcopyrite (/ ˌ k æ l k ə ˈ p aɪ r aɪ t,-k oʊ-/ KAL-ko-PY-ryt) is a copper iron sulfide mineral that crystallizes in the tetragonal system. It has the chemical formula CuFeS 2.It has a brassy to golden yellow color and a hardness of 3.5 to 4 on the Mohs scale.Its streak is diagnostic as green tinged black. On exposure to air, chalcopyrite tarnishes to a variety of oxides, hydroxides

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Chalcopyrite an overview ScienceDirect Topics

ordered substitution e.g. the structure of chalcopyrite (CuFeS 2) is derived from that of sphalerite (ZnS) by alternate replacement of zinc atoms with copper and iron, resulting in an enlarged (tetragonal) unit cell; the structure of stannite (Cu 2 FeSnS 4) results from further ordered substitution of half of the iron atoms in chalcopyrite by

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Trends in band-gap pressure coefficients in chalcopyrite

compounds, and that the Ga!In substitution lowers ag in chalcopyrites more than in zinc-blende compounds. As a result, the empirical rule suggested for zinc-blende compounds, stating that for a given transition~e.g., G15v!G1c) ag does not depend on substitutions, has to be modified for chalcopyrites. Based on our results we

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Chalcopyrite: Mineral information, data and localities.

Chalcopyrite Group. Chalcopyrite-Eskebornite Series. A major ore of copper. Common in sulfide veins and disseminated in igneous rocks. Weathering may lead to the formation of malachite, azurite, brochantite, langite and numerous other secondary copper minerals. A Zn-rich variety is known from Atlantis II Deep (see zincian chalcopyrite).Also, the Mid-Atlantic-ridge isocubanite may transform to

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Site preference for Mn substitution in spintronic CuMIIIX

Mn substitutions not only in binary ~GaAs, CdTe!, but also in ternary semiconductors such as chalcopyrites ABIIIX 2 VI. Here, however, Mn would substitute any of the two metal sites A or B. The site preference of Mn doping in CuMIIIX 2 VI chalcopyrite is crucial because it releases different type of carriers: electrons for substi-

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TIN.BEARING CHALCOPYRITE FROM THE IZUMO VEIN.

Chalcopyrite with up to 2.34 wt. 9o Sn in solid solution occttrs, however, in the Izumo vein of the Toyoha mine, Hokkaido, Japan. Chalcopyrite con-faining such high Sn has not been reported previ-ously. This paper describes the mode of occurrence and chemistry of the chalcopyrite

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Chalcopyrite the Peacock Ore

Nov 19, 2018· Chalcopyrite is isostructural with sphalerite, but its unit cells are very different in size. Substitution of Cu for Fe is very limited, also some other metals like Bi, Co, Ni, Ag and Cd might enter the structure in small amounts.

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An Alternative Depressant of Chalcopyrite in Cu–Mo

chalcopyrite in Cu–Mo differential flotation and elucidated the underlying interaction mechanism. 2. Materials and Methods 2.1. Materials Figure1a shows the molecular structure of CMC. The molecular weight (Mw) and degree of substitution (DS) of this common polysaccharide are 50,000–300,000 and 0.5–1.5, respectively. CMC was

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Effect of Na substitution on electronic and optical

Electronic & optical properties of Na substituted CuNaIn{sub 2}S{sub 4} chalcopyrite semiconductors are significantly modified due to Na substitution in the Cu deficient CuInS{sub 2} semiconductor. These properties are obtained form first principle calculation using density functional theory based

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Trace Element Distribution in Chalcopyrite-Bearing

Selenium occurs presumably as a lattice substitution into the sulfur site of all sulfide phases but generally is preferentially enriched in chalcopyrite. Other sulfide phases as well as secondary copper phases do show selenium enrichment, but selenium in these phases typically is lower and more erratic than in chalcopyrite.

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Trends in band-gap pressure coefficients in chalcopyrite

compounds, and that the Ga!In substitution lowers ag in chalcopyrites more than in zinc-blende compounds. As a result, the empirical rule suggested for zinc-blende compounds, stating that for a given transition~e.g., G15v!G1c) ag does not depend on substitutions, has to be modified for chalcopyrites. Based on our results we

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Trace elements in hydrothermal chalcopyrite

Trace elements in hydrothermal chalcopyrite LUKE L. GEORGE1,*,NIGEL J. COOK2,BRYONY B. P. CROWE1 AND CRISTIANA L. CIOBANU2 1 School of Physical Sciences, University of Adelaide, Adelaide S.A. 5005

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v116n6a4 Study of the dissolution of chalcopyrite in

looked at ‘an ion substitution mechanism, resulting in a Fe product atypical of chalcopyrite’. In a study on the surface oxidation of chalcopyrite in alkaline solutions, Yin et al. (2000) reported that the iron in the top layer of chalcopyrite oxidized, forming a monolayer of Fe(OH) 3 and Fe 2O 3, while

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CHALCOPYRITE: The World's Most Important Ore of Copper for

Elements that can substitute in very small quantities (a few parts per million) in the chemical formula are zinc, silver, gold, cadmium, cobalt, nickel, tin, and lead. Unlike pyrite, which is often subject to decay, chalcopyrite is generally stable, and is commonly referred to as the most stable copper mineral.

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Chalcopyrite: Meanings, Properties and Powers The

Chalcopyrite Properties. Chalcopyrite is also known as Peacock Ore because of its lovely iridescent green, blue, pink, purple, and gold colors that resemble the feathers of a peacock. The colors of Chalcopyrite come from the oxidation of copper and iron in the crystal. It’s a common mineral that can be found in most sulfide deposits.

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Chalcopyrite Is A Mystical Stone That Connects You To

Chalcopyrite A Mystical Stone Connecting You To Higher Realms. Written By Liz Oakes. Chalcopyrite has a positive vibration that is known to increase happiness, joy and belief in yourself, and like most gold stones it is a stone of abundance.. It is an

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Trace elements in sulfide minerals from eastern Australian

Elements that occur as inclusions in chalcopyrite include Pb, Bi, Zn (P), and Ba. The occurrence of As and Sb is unresolved, although consistently high values of As in some samples suggest that As may substitute into the lattice of chalcopyrite. Elements that substitute into the lattice include Ag (for Cu), In, Sn and Zn (?) (for Fe), and Se

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Chalcopyrite wikidoc

Chalcopyrite is a copper iron sulfide mineral that crystallizes in the tetragonal system. It has the chemical composition CuFeS 2.. It has a brassy to golden yellow color and a hardness of 3.5 to 4 on the Mohs scale. Its streak is diagnostic as green tinged black. The name is pronounced kal-co-pie-right (kal as in "calendar", "co" as in coat).. On exposure to air, chalcopyrite oxidises to a

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Tetrahedral Distortion and Thermoelectric Performance of

2 is a typical noncubic chalcopyrite compound, and its structural changes could have a great impact on not only electronic transport processes but also heat conduction. With an attempt to understand the effect of elemental substitution on the structure and hence TE performance, this work focuses Received: August 18, 2020 Accepted: October 1, 2020

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Ionization levels of doped sulfur and selenium chalcopyrites

Ternary chalcopyrite semiconductors are well known as promising materials for photovoltaic applications. The substitution of group IV atoms in sulfur and selenium copper gallium chalcopyrites

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