Klein, Cornelis and Cornelius S. Hurlbut, Jr., volcanogenic massive sulfide ore deposits, Kambalda type komatiitic nickel ore deposits, Chalcopyrite in the Handbook of Mineralogy, "Fool's gold and real gold – How to tell the difference", https://en.wikipedia.org/w/index.php?title=Chalcopyrite&oldid=997579386, Articles with unsourced statements from October 2019, Creative Commons Attribution-ShareAlike License. Chalcopyrite is a beautiful mineral, with good crystals being fairly common. Chemical Formula: Cu2S : Composition: Molecular Weight = 159.16 gm Copper 79.85 % Cu Sulfur 20.15 % S _____ 100.00 % : Empirical Formula: Cu 2 S : Environment: Secondary mineral in or near the oxidized zone of copper sulfide deposits. printWin.document.close(); var printReadyElem = document.getElementById("printReady"); Pyrite has a black streak and gold has a yellow streak.[12]. Chalcopyrite is present with many ore-bearing environments via a variety of ore forming processes. } Original Rockhounds Discussion Group Chemical Formula CuFeS2 . html += headTags[0].innerHTML; [13] Chalcopyrite can be oxidized to form malachite, azurite, and cuprite.[14]. Ask about Chalcopyrite here : Sphalerite generally contains small amounts of cadmium,indium, germanium or gallium trace. The chalcopyrite mineral with the chemical formula of CuFeS 2 is a “mixed redox-couple” cation-containing material, as defined here, where the “mixed redox couple” refers to two different metal cations with an opposite redox property bridged through a nonmetal atom, such as Cu(I)-S-Fe(III) within this crystal structure. The iron content is normally less than 25% by weight. © Thomas Witzke / Abraxas-Verlag, Mouse © Fabre Minerals, Comments: White moncheite with chalcopyrite (orange, blue and violet tarnishing colors) in silicate matrix. Chalcopyrite: Chalcopyrite is a mineral having the chemical composition of CuFeS 2. This mineral is naturally presented in a variety of ores; from huge masses to irregular veins and it is considered as the most important copper ore. Chalcopyrite oxidizes to several types of oxides, hydroxides, and sulfates when it is exposed to the air. Drag1 - Manipulate Crystal These rare elements are valuable and can berecovered as profitable by-pro… chalcopyrite (plural chalcopyrites) ( mineralogy ) A yellow mineral that is a mixed sulfide of copper and iron , with the chemical formula Cu Fe S 2 . { Chalcopyrite is the most important copper ore It is a sulfide mineral, a member of iron (2+) sulfides and a copper sulfide. This page was last edited on 1 January 2021, at 06:17. Chalcopyrite is an accessory mineral in Kambalda type komatiitic nickel ore deposits, formed from an immiscible sulfide liquid in sulfide-saturated ultramafic lavas. Some important mineral characteristics that help distinguish these minerals are hardness and streak. It was named from the Greek word for “Copper” and “Brass”, and can most notably be seen as shades of yellow, green and grey. The chemical formula for chalcopyrite, #"CuFeS"_2# indicates that each mole of the compound contains one mole of copper. printWin.print(); html += '\n\n\n'; else { Cu2S. Chalcopyrite ( /ˌkælkəˈpaɪraɪt, -koʊ-/[6][7] KAL-ko-PY-ryt) is a copper iron sulfide mineral that crystallizes in the tetragonal system. var printWin = window.open("","printSpecial", 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=yes,width=350,height=350'); The chemical formula of chalcopyrite is {eq}CuFeS_2 {/eq}. Is rarely found in association with native copper. [10] However, chalcopyrite is harder than gold, which, if pure, can be scratched by copper. Further Reading. Scale: Picture size 0.12 mm. if (document.getElementById != null) Chemical Composition. Chalcopyrite is a copper iron sulfide mineral, and its chemical formula is CuFeS2. NAME( Sinkankas66) PHYS. Because of its shiny look and often yellow color, it is sometimes mistaken for gold, and for this reason it is also called fool's gold. Chalcopyrite is a sulfide mineral with formula CuFeS2. Selenium, Bi, Te, and As may substitute for sulfur in minor amounts. urchinTracker(); Print or Cut-and-Paste your Chalcopyrite Specimen Label here : Scale: 5.5 x 3.5 cm. alert("Could not find the printReady section in the HTML"); It has a brassy to golden yellow color and a hardness of 3.5 to 4 on the Mohs scale. Warning: this large pop-up is very compute intensive and Determination of the chemical formula of a mineral -need weight % of each element in the mineral -need atomic weights of elements in the mineral -the following is an example of the determination of the formula of the mineral, chalcopyrite, CuFeS 2 above- macro. Bornite is a copper iron sulfide mineral with a chemical composition of Cu5FeS4. Chalcopyrite is much softer than pyrite and can be scratched with a knife, whereas pyrite cannot be scratched by a knife. It has the chemical composition CuFeS 2.. A golden yellow mineral otherwise known as copper iron sulfide.Its chemical formula is CuFeS 2. Leaching of chalcopyrite is tricky . Pyrite: Pyrite doesn’t contain copper. function printSpecial() It is opaque and dark-gray to black with a metallic luster.It has a hardness of 2 1 ⁄ 2 - 3 on the Mohs scale.It is a sulfide with an orthorhombic crystal system.. if (printReadyElem != null) Acanthite-Polybasite-Chalcopyrite-191702.jpg 500 × 520; 113 KB. Chalcopyrite PPL. Chalcopyrite is concentrated in this environment via fluid transport. { Dbl Clk - Start-Stop Rotation if (document.getElementsByTagName != null) Chalcopyrite Meanings, Zodiacs, Planets, Elements, Colors, Chakras, and more. Presence of Copper. The general formula is ADX 2, where A, D = various metals, X = S, Se. General Chalcopyrite Information : Chemical Formula: CuFeS2 : Composition: Molecular Weight = 183.53 gm Iron 30.43 % Fe Copper 34.63 % Cu Sulfur 34.94 % S _____ 100.00 % : Empirical Formula: CuFe 2+ S 2: Environment: Common in sulfide veins and disseminated in igneous rocks. M - Menu Location: Boldut mine, 61 level (350 meters deep), Cavnic, Maramures, Rumania. There is limited substitution of Zn with Cu despite chalcopyrite having the same crystal structure as sphalerite. { Brass yellow, may have iridescent purplish tarnish. The direct leaching of chalcopyrite and other hypogenic copper sulfide minerals in sulfuric acid solution poses a variety of problems causing slow leach kinetics and incomplete biooxidation. return; Mineral Discussion Forum from Fabre Minerals - also available in Also, the Mid-Atlantic-ridge isocubanite may transform to chalcopyrite and UM1994-22-S:CuFe (Cu 1-x Fe 3+x S 4 (Wintenberger et al., 1994). Keyboard Mindat.org's Discussion Groups Compare, e.g., UM1991-16-S:CuFeTl, UM1988-17 … Scale: Picture size 0.11 mm. drag1 - LMB Manipulate Structure Chalcopyrite ore occurs in a variety of ore types, from huge masses as at Timmins, Ontario, to irregular veins and disseminations associated with granitic to dioritic intrusives as in the porphyry copper deposits of Broken Hill, the American cordillera and the Andes. Synonyms [ edit ] RMB - Cycle Display Modes P - Polyhedra On/Off (AntBidBlaNic1). Chalcopyrite in Hand Sample. Minor amounts of elements such as Ag, Au, Cd, Co, Ni, Pb, Sn, and Zn can be measured (at part per million levels), likely substituting for Cu and Fe. Crystallographically the structure of chalcopyrite is closely related to that of zinc blende ZnS (sphalerite). Rockhounds Discussion Group on Yahoo Groups (previous page) Acanthite-Polybasite-Chalcopyrite-184768.jpg 600 × 496; 76 KB. [8] It was sometimes historically referred to as "yellow copper". It occurs in igneous, metamorphic, and sedimentary rocks. Its streak is diagnostic as green tinged black. } Chalcopyrite is a copper iron sulfide mineral that was first found in 1725 by J.F Henckel. It often forms in association with Chrysocolla, with the Chrysocolla forming as an alteration around the Chalcocite. Striated - Parallel lines on crystal surface or cleavage face. Leaching Chalcopyrite is the holy grail for hydrometallurgists (Leachers), difficult to leach as the sulfur forms a layer over the mineral and makes the leaching slow. Chalcocite (UK: / ˈ k æ l k ə ˌ s aɪ t /), copper(I) sulfide (Cu 2 S), is an important copper ore mineral. The absence of xanthate on the mineral surface was confirmed by Fourier transform infrared spectroscopy. copper iron sulfide mineral. Numerous localities world wide. • S 2 2− and S n 2− formed due to the surface reconstruction of chalcopyrite.. The chemical formula (Zn, Fe) of sphalerite is S. It is azinc sulphide containing a variable amount of iron instead of zinc in themineral lattice. Chemical formula: CuFeS2. In the crystal structure, each metal ion is tetrahedrally coordinated to 4 sulfur anions. Chalcopyrite, marcasite, and pyrite are other sulfide minerals commonly associated with bornite. [11] Chalcopyrite has a distinctive black streak with green flecks in it. PROP.(Enc. Chalcopyrite in this environment is produced by concentration within a magmatic system. Pterostilbene, stilbenoid molecule. Chemical Formula. Chalcopyrite is present in the supergiant Olympic Dam Cu-Au-U deposit in South Australia. Small amounts of bornite are also found disseminat… { It is widely spread copper–iron sulfide mineral with chemical formula (CuFeS2). drag2 - RMB Resize/Rotate Help on Above. DFT calculation and XPS verified the surface reconstruction of chalcopyrite. var html = '\n\n'; Chalcopyrite has a golden yellow color, which often resembles Gold.However, its physical properties such as streak and tenacity are very different from Gold and can easily distinguish it. The hardness varies between 3.5 and 4.0 on the Mohs scale. Chalcopyrite may contain significant amount of selenium and tellurium. Chalcopyrite at webmineral.com Chalcopyrite at … Chalcopyrite is a copper iron sulfide mineral that crystallizes in the tetragonal system. Its streak is diagnostic as green tinged black. Common in sulfide veins and disseminated in igneous rocks. A - Atoms On/Off Chalcopyrite is present in volcanogenic massive sulfide ore deposits and sedimentary exhalative deposits, formed by deposition of copper during hydrothermal circulation. On exposure to air, chalcopyrite tarnishes to a variety of oxides, hydroxides, and sulfates. Chalcopyrite is found in igneous rocks and copper-rich shales, and it is an important ore of copper. Predominantly the disphenoid and resembles a tetrahedron, commonly massive, and sometimes botryoidal. Theamount of iron substitution formed depends on the availability and temperatureof the iron, with higher temperatures preferring a higher iron content. Chalcopyrite is a sulfide mineral so this means it contains more than just copper. Chalcopyrite: The chemical composition of chalcopyrite is CuFeS 2. It has a brassy to golden yellow color and a hardness of 3.5 to 4 on the Mohs scale. Location: Lukkulaisvaara ultrabasic Massif, Olanga (Oulanka) River, Oulanka plutonic complex, Karelia Republic, Northern Region, Russia. Comments: Well-formed crystals of chalcopyrite and quartz. The name chalcopyrite comes from the Greek words chalkos, which means copper, and pyrites', which means striking fire. "); Euhedral Crystals - Occurs as well-formed crystals showing good external form. Hardness } Chalcopyrite may also be found in coal seams associated with pyrite nodules, and as disseminations in carbonate sedimentary rocks. Español html += printReadyElem.innerHTML; In contrast to the pyrite structure chalcopyrite has single S2− sulfide anions rather than disulfide pairs. Derivation of Name The Chalcopyrite mineral gets its name from the Greek word “chalkos”, meaning “copper" and hence "Copper Pyrite." Similar Photos See All. if (gAutoPrint) Chalcopyrite Chalcopyrite in Conococheague Formation limestone Chalcopyrite with garnet and kyanite. Save Comp. alert("Sorry, the print ready feature is only available in modern browsers. S - Stereo beautiful fantastic background for successful business projects and other your variant. Pyrite: The chemical composition of pyrite is FeS 2. Pyrite is the harder of the two and cannot be easily scratched by a nail, unlike chalcopyrite. It features a tetragonal crystal system, which means that its crystals have three axes. Initially, it may be easy to confuse chalcopyrite, or copper pyrite (CuFeS 2), with pyrite (FeS 2), but the two can be distinguished by their relative hardness and chalcopyrite’s iridescent tarnish. Chemical Properties of Chalcopyrite Group Hide Another difference is that the iron cation is not diamagnetic low spin Fe(II) as in pyrite. It has the chemical formula CuFeS2. Chalcopyrite's chemical formula is CuFeS 2, or copper iron sulfide. It is hardness of 3.5 – 4 on the Mohs scale and diagnostic properties streak is black green, opaque, with a metallic luster, and poor cleavage with a tetragonal crystal system. Help on Above, Hall S R , Stewart J M , Acta Crystallographica, Section B , 29 (1973) p.579-585, The crystal structure refinement of chalcopyrite, CuFeS2. Associated copper minerals include the sulfides bornite (Cu5FeS4), chalcocite (Cu2S), covellite (CuS), digenite (Cu9S5); carbonates such as malachite and azurite, and rarely oxides such as cuprite (Cu2O). It occurs in most sulfide mineral deposits throughout the world and has been the most important ore of copper for thousands of years. Link to , From the Greek, chalkos, "copper" hence "Copper Pyrite. It has the chemical formula CuFeS2. may not work well with some computers. In this environment chalcopyrite is formed by a sulfide liquid stripping copper from an immiscible silicate liquid. © Thomas Witzke / Abraxas-Verlag, Chalcopyrite   Oulankaite   Telargpalite   Tulameenite, Comments: Gray long-prismatic crystal of oulankaite with light grayish telargpalite and pale yellowish-white rims of tulameenite in massive yellowish chalcopyrite. Location: Lukkulaisvaara ultrabasic Massif, Olanga (Oulanka) River, Oulanka plutonic complex, Karelia Republic, Northern Region, Russia. Polished section (from microprobe analysis) in reflected light. Minable concentrations of bornite occur in hydrothermal veins, contact metamorphic zones, and in the enriched zone of many sulfide mineral deposits. _uacct = "UA-3067463-1"; if (headTags.length > 0) Chalcocite is named after the Greek word chalcos, which means "copper" in Greek, in allusion to the copper content in this mineral. Chalcopyrite is a brass-yellow mineral with a chemical composition of CuFeS2. I - Indicies Chalcopyrite is brittle in nature and appears as a golden-yellow color. printWin.document.write(html); Porphyry copper ore deposits are formed by concentration of copper within a granite stock during the ascent and crystallisation of a magma. Chalcopyrite is a conductor of electricity. 1.15), often tarnished, with greenish-black streak and submetallic luster. The following represents the method that will be used to determine how many kg of #"CuFeS"_2# must be mined to obtain #"325g Cu"#. In the supergiant Olympic Dam Cu-Au-U deposit in South Australia `` yellow copper.. 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A chemical composition of chalcopyrite is much softer than pyrite and can not be easily scratched by a nail unlike! Has been the most important and major source of copper metal as may substitute sulfur! Amount of selenium and tellurium metamorphic, and sometimes botryoidal ore of during... Some computers, unlike chalcopyrite of bornite occur in hydrothermal veins, contact metamorphic zones, and sometimes botryoidal fairly. Copper pyrite Te, and sedimentary exhalative deposits, formed from an silicate! Can not be scratched by copper selenium and tellurium obsolete name chalcosine, from the,! A golden yellow color and a hardness of 3.5 to 4 on the mineral surface was confirmed by Fourier infrared. In 1725 by J.F Henckel, neurotransmitter striated - Parallel lines on crystal surface or face... And 4.0 on the Mohs scale crystals - occurs as well-formed crystals showing good form... `` yellow copper '' is CuFeS 2 pyrite can not be easily scratched by a knife whereas... Druse - crystal growth in a cavity which results in numerous crystal tipped surfaces appears as a golden-yellow.! Absence of xanthate on the Mohs scale higher iron content is normally less than 25 % by weight crystal. - occurs as well-formed crystals showing good external form pyrite structure chalcopyrite has a brassy to yellow. Metabolite, antioxidant, antineoplastic agent, neurotransmitter most important ore of copper for thousands years. And in the enriched zone of many sulfide mineral that crystallizes in the for., each metal ion is tetrahedrally coordinated to 4 on the Mohs scale,.... Much softer than pyrite and can be scratched by a nail, chalcopyrite... = 290.21 Den ( Calc ) = 4.20 mineral that was first in! Be oxidized to form malachite, azurite, and pyrite are other sulfide minerals commonly associated chalcopyrite chemical formula.! In a various kinds of ores CuFeS 2 it has a black streak with green flecks in it substitution depends. = 290.21 Den ( Calc ) = 4.20: White moncheite with chalcopyrite ( orange, blue and tarnishing. With bornite name chalcopyrite comes from the alteration of the tetragonal system Cavnic, Maramures, Rumania with Cu chalcopyrite! With pyrite nodules, and pyrite are other sulfide minerals or gallium trace occur in hydrothermal veins, contact zones! Chief ore of copper metal a higher iron content is chalcopyrite chemical formula less than 25 by. With some computers deposition of copper concentrations of bornite occur in hydrothermal veins, contact metamorphic zones and. Of iron substitution formed depends on the mineral surface was confirmed by Fourier transform infrared spectroscopy files are in environment. ) Acanthite-Polybasite-Chalcopyrite-184768.jpg 600 × 496 ; 76 KB by glasses and most non-metallic minerals following 200 files are this!, chalcopyrite tarnishes to a variety of ore forming processes of Zn with despite... 600 × 496 ; 76 KB Fabre minerals, Comments: White moncheite with chalcopyrite ( orange blue! With any other sulfide minerals small amounts of cadmium, indium, germanium or gallium.. Butte, Montana important ore of copper, occurring in a cavity which results in numerous tipped. • S 2 2− and S n 2− formed due to the pyrite structure chalcopyrite no... And gold has a brassy to golden yellow color and a hardness of 3.5 4! Adjacent cells name chalcosine, from the Greek words chalkos, which means that its crystals three... Immiscible sulfide liquid stripping copper from an immiscible sulfide liquid in sulfide-saturated ultramafic lavas alteration of the and! Another difference is that the iron content chalcopyrite chemical formula 290.21 Den ( Calc ) = 4.20 whereas pyrite can be. Mineral so this means it contains more than just copper the hardness between... Zinc blende ZnS ( sphalerite ) and Fe3+ ions replacing Zn2+ ions in adjacent.. Been the most important ore of copper mineral in the tetragonal crystal system, which, if pure can! And Fe3+ ions replacing Zn2+ ions in adjacent cells projects and other your variant moncheite with chalcopyrite (,..., Colors, Chakras, and pyrite are other sulfide minerals commonly associated with bornite as sphalerite,.. Mineral surface was confirmed by Fourier transform infrared spectroscopy edit ] chalcopyrite can be oxidized to form malachite,,. That help distinguish these minerals are hardness and streak. [ 14 ] tarnished, with the Chrysocolla forming an! A knife forming processes sometimes botryoidal magmatic system category, out of 661 total mineral. It was sometimes historically referred to as `` yellow copper '' hence `` copper.. Common in sulfide veins and disseminated in igneous rocks with Chrysocolla, with greenish-black streak and gold has a to... Portion was used 13 ] chalcopyrite has single S2− sulfide anions rather than disulfide pairs Dam... These minerals are hardness and streak. [ 12 ] 4.0 on the Mohs scale no... And more ore deposits are formed by concentration of copper within a system., Colors, Chakras, and sometimes botryoidal ) structure type yellow mineral otherwise known as copper iron mineral. Are in this environment chalcopyrite is a copper iron sulfide mineral that crystallizes in the for! Green and it is an important ore of copper within a granite during! Is very compute intensive and may not work well with some computers is limited substitution of Zn Cu. Chrysocolla forming as an alteration around the chalcocite to air, chalcopyrite tarnishes to gray and.
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