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Topics related to "chalcopyrite"

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 metamo... Read more
pentlandite
pentlandite An iron and nickel sulphide, with the formula (FeNi)9S8, and the main ore mineral for nickel; sp. gr. 4.5–5.0; hardness 3–4; cubic; light bronze-yellow; greenish-black streak; metallic lustre; very rarely found in well-formed crystals, usually occurring as irregular grains ... Read more
pyrite
pyrite or iron pyrites , pale brass-yellow mineral, the bisulfide of iron, FeS 2 . It occurs most commonly in crystals (belonging to the isometric system and usually in the form of cubes and pyritohedrons) but is also found in massive, granular, and stalactite form. In spite of its nickname, "... Read more

Encyclopedia entries related to "chalcopyrite"

chalcopyrite
Book article from: The Columbia Encyclopedia, Sixth Edition chalcopyrite or copper pyrites , brass-yellow mineral, sometimes with an iridescent...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...
massive sulphide deposits
Book article from: The Oxford Companion to the Earth ...causes precipitation of minerals such as pyrite (FeS 2 ), chalcopyrite (FeCuS 2 ), sphalerite (ZnS), and galena (PbS) that...pyrite or pyrrhotite, or both and a copper-rich sulphide (chalcopyrite) is overlain by more zinc- and lead-rich sulphides...
copper
Book article from: The Columbia Encyclopedia, Sixth Edition ...Russia (in the Ural Mts.), and to a limited extent in Europe and the British Isles. The principal ore of copper is chalcopyrite , a sulfide of copper and iron, also called copper pyrite. Other important ores are chalcocite, or copper glance, a shiny...
black smokers and white smokers
Book article from: The Oxford Companion to the Earth ...black smoker chimney clusters (Fig. 3). The minerals that form these chimneys are primarily pyrite (FeS 2 ), with some chalcopyrite (CuFeS 2 ) and anhydrite (CaSO 4 ). The fluids have a relatively low concentration of zinc (45 m mol l −1...
lead–zinc deposits
Book article from: The Oxford Companion to the Earth ...These deposits are comprised of fine layers of galena and sphalerite, together with pyrite, pyrrhotite, barite, and minor chalcopyrite interbedded with deep-water sedimentary rocks. Important examples are found at Mt Isa and McArthur River, Australia...
iron–nickel deposits
Book article from: The Oxford Companion to the Earth ...main ore mineral is pentlandite ((Fe,Ni) 9 S 8 ); other common minerals include pyrrhotite (Fe 1–x S), chalcopyrite (CuFeS 2 ), pyrite (FeS 2 ), magnetite (Fe 3 O 4 ), and iron-rich chromite (FeCr 2 O 4 ). The ores are thought...
ore minerals
Book article from: The Oxford Companion to the Earth ...molybdenum, nickel, and silver. Sulphide minerals in which two metals combine with sulphur are also common ore minerals. Chalcopyrite, a combination of copper, iron, and sulphur, is an important ore mineral for copper and is found in many of its deposits...
sulphide minerals
Book article from: The Oxford Companion to the Earth ...antimony, and arsenic. Sulphides in which two metals combine with sulphur are also common and two of these minerals, chalcopyrite (CuFeS 2 ) and bornite (Cu 5 FeS 4 ), in which copper combines with iron and sulphur, are the most commonly encountered...
copper pyrites
Book article from: The Columbia Encyclopedia, Sixth Edition copper pyrites see chalcopyrite .
pyrite
Book article from: The Columbia Encyclopedia, Sixth Edition ...metallic sulfides that strike fire with steel. Some minerals resembling pyrite in appearance or composition are arsenopyrite , chalcopyrite (copper pyrites), cobaltite , marcasite (white iron pyrites or spear pyrites), and pyrrhotite (magnetic pyrites...

Dictionary entries related to "chalcopyrite"

chalcopyrite
Book article from: A Dictionary of Earth Sciences chalcopyrite ( copper pyrites ) Most common copper mineral, CuFeS 2 ; sp. gr. 4.1–4.3; hardness 3.5–4.0...
copper pyrites
Book article from: A Dictionary of Earth Sciences copper pyrites See CHALCOPYRITE .
stannite
Book article from: A Dictionary of Earth Sciences ...normally the grains are irregular or massive ; occurs in hydrothermal tin- ore deposits and in association with cassiterite , chalcopyrite , and wolframite , also in stanniferous sphalerite – galena ores, and associated with sphalerite, pyrrhotite...
cryolite
Book article from: A Dictionary of Earth Sciences ...parting; occurs in pegmatites that have been enriched with fluorine, and in association with siderite , quartz , galena , chalcopyrite , fluorite , and cassiterite . The powder becomes almost invisible in water due to its low refractive index . Synthetic cryolite...
geothermometer
Book article from: A Dictionary of Earth Sciences ...disappears upon heating); ( d ) unmixing or exsolution lamellae of mineral pairs below a particular temperature, e.g. chalcopyrite—bornite at 500°C; ( e ) temperature-dependent element distribution between co-existing minerals...
porphyry deposit
Book article from: A Dictionary of Earth Sciences ...alteration halos . Most deposits are 3–8 km across and several kilometres deep. They consist of disseminated chalcopyrite and other sulphides mined on a large scale from open pits . The ore is low grade (less than 1% Cu) but of great economic...
siderite
Book article from: A Dictionary of Earth Sciences ...clay into ironstone , also as a gangue mineral in hydrothermal veins together with other metallic ores (e.g. pyrite , chalcopyrite , and galena ) and as a replacement mineral in limestone ; dissolves slowly in cold, dilute hydrochloric acid, which effervesces...
cobaltite
Book article from: A Dictionary of Earth Sciences ...cleavage perfect cubic; occurs mainly in hydrothermal veins and contact metamorphic zones , and is associated with chalcopyrite , sphalerite , chlorite , tourmaline , and apatite . It is one of the principal ore minerals for cobalt.
uraninite
Book article from: A Dictionary of Earth Sciences ...and in association with monazite , zircon , and tourmaline , in hydrothermal veins together with cassiterite , pyrite , chalcopyrite , and galena , and as a detrital material in alluvials . It is a major ore mineral for uranium metal.
digenite
Book article from: A Dictionary of Earth Sciences digenite A copper sulphide Cu 9 S 5 , closely related to chalcocite Cu 2 S; sp. gr. 5.7; hardness 3; greyish-blue; sub-metallic lustre ; occurs as irregular aggregates in association with other copper sulphides, e.g. chalcopyrite and bornite , in mineral deposits.

Related newspaper, magazine, and trade journal articles from HighBeam Research

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...
Sulfidation of chalcopyrite with elemental sulfur
Magazine article from: Metallurgical and Materials Transactions; 2/1/2003; ; 700+ words ; The sulfidation of chalcopyrite concentrate with elemental sulfur...showed that the sulfidation of chalcopyrite forms CuS and FeS^sub 2^ at...were formed. The sulfidation of chalcopyrite proceeds mainly through the gaseous...
Copper Leaching from Chalcopyrite Concentrates
Magazine article from: JOM; 7/1/2005; ; 700+ words ; Chalcopyrite (CuFeS^sub 2^) is one of the most...been developed to leach copper from chalcopyrite concentrates. These processes recover...leaching of the copper component of chalcopyrite concentrates, followed by solvent...
Kinetics of the sulfidation of chalcopyrite with gaseous sulfur
Magazine article from: Metallurgical and Materials Transactions; 2/1/2003; ; 700+ words ; The sulfidation of chalcopyrite with gaseous sulfur in the temperature...with a shrinking core of unreacted chalcopyrite surrounded by successive layers...by the reaction occurring at the chalcopyrite-pyrite interface, resulting...
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...
Extraction of copper from chalcopyrite concentrates without sulfuric acid generation via chlorination: Part 2: Selective oxidation of chlorinated products
Magazine article from: Minerals & Metallurgical Processing; 11/1/2000; ; 700+ words ; ...hydrometallurgical processing of a chalcopyrite concentrate. In this article, the...undissolved. Key words: Copper, Chalcopyrite, Chlorination, Fluidized bed reactors...metals. While chemical leaching of chalcopyrite concentrates in aqueous chloride media...
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...
Improved leaching performance of chalcopyrite by microbial cultures subjected to mutation
Magazine article from: Minerals & Metallurgical Processing; 5/1/2008; ; 700+ words ; ...to efficiently leach copper ion from chalcopyrite, microbial samples from acid mine...words: Mutation, Mixed cultures, Chalcopyrite, Leaching Introduction Bioleaching...samples were mixed and enriched. The chalcopyrite used in the experiments originated...
Extraction of copper from chalcopyrite concentrates without sulfuric acid generation via chlorination, part 3: Integration of gaseous chlorination and selective oxidation
Magazine article from: Minerals & Metallurgical Processing; 11/1/2001; ; 700+ words ; ...conversion was tested for processing chalcopyrite concentrate. It was found that the...Fluidizing-bed reactor, Copper leaching, Chalcopyrite, Precious metals Introduction The...and sulfur chloride conversion on a chalcopyrite concentrate. The process was previously...