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Geology of Porphyry Copper Deposits

Porphyry Copper Deposit Geology PPT. Here let's understand the geology of porphyries and iron oxide copper gold deposits or IOCG as they are known. These are somewhat the giants of the ore …

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A Reevaluation of the Timing and Temperature of Copper and …

The timing and temperature at which copper-iron and molybdenum sulfide deposition occurs in porphyry deposits remain controversial. Petrologic estimates …

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Reduction of oxidized sulfur in the formation of the Grasberg porphyry

The reduction of oxidized sulfur is essential in porphyry copper deposits whose mineralization predominantly comprises copper sulfides, whereas their source magmas are oxidized with most of their sulfur as SO 4 2− and with exsolved fluids having SO 2 >>H 2 S. To estimate the redox state of sulfur, we examined drill cores that …

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A review of copper–arsenic mineral removal from copper concentrates

Within the Andean Porphyry Copper deposits, Chile, chalcopyrite and pyrite are the primary sulphides, but tennantite and enargite are also present in the upper levels of these deposits (Pinchiera et al., 1998). ... Interestingly, flotation of mixed mineral of copper sulfide and arsenic-bearing copper minerals shows that enargite and tennantite ...

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(PDF) Geochemistry of Porphyry Deposits

Abstract. Porphyry ore deposits typically form in convergent plate margin or postsubduction settings at depths of 1-6. km. Oxidized hydrous melts derived from the metasomatized mantle wedge ...

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Gold in porphyry copper deposits: its abundance and fate

Cu/Au atomic ratios of porphyry copper ore deposits form a continuous range from about 5000 to 5,000,000 with a median near 40,000, which separates gold-rich and gold-poor deposits. Gold is found in porphyry copper deposits in solid solution in Cu–Fe and Cu sulfides and as small grains of native gold, usually along boundaries of bornite.

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King Copper | AZGS

Copper remains Arizona's most abundant and valuable metallic mineral product. In 2017, Arizona provided 68% of domestic copper production in the U.S. Arizona has two major types of copper deposits: Porphyry Copper in southern and central Arizona; and, the Volcanogenic Massive Sulfide Copper of the United Verde Mine in Jerome of central …

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Mineralogy of Sulfides | Elements | GeoScienceWorld

Sulfide minerals are compounds in which sulfur is combined as an anion with a metal (or semi-metal) cation or cations. The definition is commonly widened to include minerals in which the anion is As or Sb, …

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Copper Deposits | SpringerLink

Abstract. There are several genetic types of copper deposits, including porphyry Cu-Mo and Cu-Au, volcanogenic massive sulfide, Cu skarn, and basalt and sedimentary hosted Cu, but at the time of writing, the only economic ones are porphyry type deposits (Erdenet, Oyu Tolgoi, Tsagaan Suvarga, and Kharmagtai). All deposits are …

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Cu-sulfide mineralogy, texture, and geochemistry in the …

Copper-bearing sulfide assemblage zonation and replacement are found in porphyry-epithermal Cu-Au systems (Sillitoe 1999; Garza et al. 2001; Ossandón et al. …

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Copper Mining and Processing: Processing Copper Ores

Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for everyday use.The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and …

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Porphyry copper deposit formation by sub-volcanic …

Porphyry copper deposits—the primary source of the world's copper—are a consequence of the degassing of intrusion complexes in magmatic arcs associated with ancient subduction …

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Mineralogical Prediction on the Flotation Behavior of Copper and …

The copper ore in Chilean copper porphyry deposits is often associated with molybdenum minerals. This copper–molybdenum (Cu–Mo) sulfide ore is generally mined from various locations in the mining site; thus, the mineral composition, oxidation degree, mineral particle size, and grade vary. Therefore, in the mining operation, it is …

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SOUTH AMERICA | Freeport-McMoRan

FCX's South America mining operations include open-pit mining, sulfide ore concentrating, leaching and solution extraction/electrowinning. Production from these mines is sold as concentrate or cathode under long-term contracts. Our South America mines also ship a portion of their copper concentrate to Atlantic Copper, our wholly owned smelting and …

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Minerals | Free Full-Text | Sulfide Trace Element Signatures and …

The Elatsite–Chelopech ore field in the northern part of the Panagyurishte district in Central Bulgaria comprises numerous spatially associated porphyry copper and epithermal gold deposits and prospects. In addition to the mineralization and alteration features, trace elements, lead and sulfur isotope signatures of sulfide minerals from …

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Bell Copper Drills Copper Sulfide in Porphyry at Big Sandy

VANCOUVER, B.C. - Bell Copper Corporation (TSXV:BCU) (OTCQB:BCUFF)("Bell Copper" or the "Company") reports that it has drilled a supergene chalcocite (copper sulfide) deposit hosted by quartz porphyry at its Big Sandy project.Big Sandy is a large, truncated porphyry copper-molybdenum target located in …

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Porphyry Deposits: The World's Largest Source of Copper

These deposits provide over 60% of the world's copper and include other important metals such as molybdenum, gold and silver. Porphyry copper deposits are known for their low grades and very high tonnage. A porphyry is not a rock type, but rock with a particular texture. This porphyritic rock has large feldspar crystals in a finer grained …

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Origins of Chalcocite Defined by Copper Isotope Values

Near-surface oxidation zones in porphyry copper deposits are a classic example of this process. Commonly, some Cu remains in the leached capping. ... Solutions that leach copper during oxidation from the copper sulfide mineral become enriched in the 65 Cu isotope due to a stronger bonding environment [33, 38, 39]. Although the degree of ...

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Geology of the High Sulfidation Copper Deposits, Monywa Mine, …

Meter-scale intercepts of quartz-replaced sponge-textured sulfide-free andesite porphyry with leached-out felspar phenocrysts occur to depths which at Letpadaung exceed 600 m. ... inferred porphyry copper mineralization beneath Letpadaung from the presence of saline fluid inclusions in quartz vein fragments within breccias. It could also be ...

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Imaging the subsurface architecture in porphyry copper deposits …

For porphyry copper deposits, the world's primary source of Cu, Mo, and Re, identifying the dynamic processes that control their emplacement in the upper crust …

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How to Process Copper Ore: Beneficiation Methods and Equipment

Almost all copper sulphide ores contain iron-bearing sulfides, so in a sense, the flotation of copper sulfide is essentially the separation of copper sulfide from iron sulfide. ... All iron-bearing copper minerals, such as chalcopyrite and porphyry, are easily inhibited by cyanide and lime in alkaline media. The xanthate collector mainly plays ...

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Triggers for the formation of porphyry ore deposits in

Porphyry ore deposits supply much of the copper, molybdenum, gold and silver used by humans. A review of the main processes that trigger porphyry ore formation suggests that sulphide saturation of ...

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MINERALOGY OF COPPER SULFIDES IN PORPHYRY …

THE UNIVERSITY OF ARIZONA GRADUATE COLLEGE As members of the Dissertation Committee, we certify that we have read the dissertation prepared by Benjamin N. …

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Early sulfide saturation is not detrimental to porphyry Cu-Au …

Ore-forming magmas are commonly considered to have been unusually metal rich. Because Cu and Au are strongly chalcophile, early sulfide saturation has been regarded as detrimental to porphyry Cu-Au mineralization. Here we demonstrate, based on amphibole-rich cumulate xenoliths and amphibole megacrysts from the Tongling …

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Everything You Need to Know About Copper Porphyries

Large Size, Low Grade – Porphyries typically have 100 million to 5 billion tonnes of ore with a lower grade (0.2% to >1% copper). It is the size of these deposits that allow for bulk mining and economies of scale. Long Mine Life – The size of porphyry systems usually mean that the life of the mine can be multi-decades long.

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A Reevaluation of the Timing and Temperature of Copper and …

The timing and temperature at which copper-iron and molybdenum sulfide deposition occurs in porphyry deposits remain controversial. Petrologic estimates indicate that veins and wall-rock alteration zones containing copper-iron sulfides form in a wide temperature range from ~350° to 650°C.

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POLYMETALLIC VEIN AND REPLACEMENT DEPOSITS …

fluorine (Model 21b); porphyry copper (Model 17); porphyry copper-gold (Model 20c); porphyry copper­ ... Zoning: In many deposits, ore grades from copper sulfide mineral-rich (chalcopyrite, enargite, bornite) within and near igneous intrusions, to sphalerite- and galena-rich away from intrusions, to sphalerite- and manganese carbonate-

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Reduction of oxidized sulfur in the formation of the Grasberg …

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BIG SANDY | bellcopper

Bell Copper began exploring the Big Sandy area in 2009, after geologic success in discovering what was believed to be the faulted top of the Wheeler Wash porphyry copper-molybdenum system, 30 kilometers to the north at the Company's Perseverance project. Extrapolation southward along the controlling Hualapai Fault suggested that the known ...

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Porphyry Copper Systems*

lithocaps above porphyry Cu deposits, where massive sulfide lodes tend to develop in deeper feeder structures and Au ± Ag-rich, disseminated deposits within the uppermost 500 m or so. ... genic epochs, which isotopic dating shows to have typical du-PORPHYRY COPPER SYSTEMS Porphyry Cu. Porphyry Cu systems are generated mainly in …

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Cu-sulfide mineralogy, texture, and geochemistry in the …

The Tiegelongnan porphyry-epithermal deposit (2089 Mt @ 0.53% Cu, 0.08 g/t Au) is host to a large variety of Cu-sulfide minerals, mainly chalcopyrite, bornite, covellite, digenite, enargite, and tennantite. We used LA-ICP-MS to investigate the trace element geochemistry of the Tiegelongnan Cu-sulfides, as well as pyrite, to understand …

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Crustal magmatic controls on the formation of porphyry copper

Copper and gold are chalcophile elements (sulfide-loving elements) that preferentially bond with sulfur in sulfide phases 41,42, such as sulfide melts and monosulfide solid solutions 43.

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Copper Ore Types: Sulfides vs. Oxides (Updated 2023)

Most of the rock is unwanted material, typically referred to as gangue. There are two main types of copper ore that are of interest: copper oxide ores and copper sulfide ores. Both ore types can ...

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In-situ experiments reveal mineralization details of porphyry copper

In-situ hydrothermal experiments using diamond-anvil cell show that sulfate and sulfide are the dominant sulfur species under P-T conditions similar to those of porphyry magmas. No sulfite was identified using in-situ Raman spectrometer. This supports that porphyry copper mineralization is controlled by sulfate reduction, rather …

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(PDF) Crustal magmatic controls on the formation of porphyry copper

Copper and gold are chalcophile elements (sulfide- loving elements) that pr eferentially bond with sulfur in sulfide phases 41, 42, such as sulfide melts and monosulfide

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HYPOGENE ALTERATION AND MINERALIZATION IN THE …

The Dos Pobres Cu(-Au-Mo) deposit (211 million metric tonnes sulfide resource 0.73% Cu with up to 1 ppm Au) is located in the Safford district of southeastern Arizona and is one of several Au-bearing porphyry systems in Arizona. The deposit is centered on Paleocene (57 Ma) quartz monzodioritic porphyry dikes that intrude and alter Late

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