• Porphyry copper deposit

    Porphyry deposits represent an important resource of copper; however, they are also important sources of gold and molybdenum with porphyry deposits being the dominant source of the latter. [6] In general, porphyry deposits are characterized by low grades of ore mineralization, a porphyritic intrusive complex that is surrounded by a vein stockwork and hydrothermal .

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  • (PDF) The formation of porphyry copper deposits

     · Porphyry ore deposits are the source of much of the copper, molybdenum, gold and silver used by humans. Porphyry ore typically forms in magmatic arcs above subduction zones. However, generation of ...

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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 (% 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 multidecades long.

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  • Basics of Copper Porphyry Deposits for Investors | Classic ...

     · The ore in copper porphyry deposits is usually loed between the potassic and phyllic alternations. There is a pyrite halo surrounding the ore. Chlorite, calcide, epidote, and adularia are commonly present in the propylitic alteration.

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  • (PDF) Magma Evolution Leading to Porphyry AuCu ...

    Porphyry copper deposits are rare compared to ubiquitous, barren, silicic upper crustal intrusions that can occur even within the same magmatic district, suggesting that unique circumstances related to the evolution of the magmatic system are required to form economic ore deposits (Sillitoe 1997, Rohrlach et al., 2005, Sillitoe and Perello 2005, Audetat et al., 2008; .

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  • PorterGeo Database

    Sugeng Widodo, Belluz N, Nur Wiwoho, Bowo Kusnanto, Manning P, Macdonald G, Edwards A, 1998 Geology of the Kucing Liar Ore Body, Irian Jaya, Indonesia, in Porter T M, (Ed.), Porphyry and Hydrothermal Copper and Gold Deposits: A Global Perspective, pp 4960 Abstract Paterson J T and Cloos M, 2005 Grasberg Porphyry CuAu Deposit, Papua, Indonesia: 2.

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  • The Geology and Geochemistry of the Haquira East Porphyry ...

    The Geology and Geochemistry of the Haquira East Porphyry Copper Deposit of Southern Peru : Insights on the Timing, Temperature and Lifespan of .

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  • Chapter 7 ByProducts of Porphyry Copper and Molybdenum ...

    Porphyry Cu and porphyry Mo deposits are large to giant deposits ranging up to >20 and Gt of ore, respec tively, that supply about 60 and 95% of the world's copper and molybdenum, as well as significant amounts of

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  • Porphyry Copper Deposit

    Copper is not the only metal that occurs in porphyry deposits. There are also porphyry ore deposits mined primarily for molybdenum, many of which contain very little copper. Examples of porphyry molybdenum deposits are the Climax, Urad, and Henderson deposits in central Colorado, and the Questa deposit in northern New Mexico.

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  • (PDF) Magma Evolution Leading to Porphyry AuCu ...

    Porphyry copper deposits are rare compared to ubiquitous, barren, silicic upper crustal intrusions that can occur even within the same magmatic district, suggesting that unique circumstances related to the evolution of the magmatic system are required to form economic ore deposits (Sillitoe 1997, Rohrlach et al., 2005, Sillitoe and Perello 2005, Audetat et al., 2008; .

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  • DISCOVERING WORLD CLASSGOLD AND GOLDCOPPER PORPHYRY ...

    03 THE TARGETS: NEW PROSPERITY GOLD COPPER PORPHYRY DEPOSIT MODEL 15 EMERSON (50 km2) and GOATHORN ( km2) have characteristics of New Prosperity goldcopper porphyry ( oz. Au; billion lb. Cu) JACOBITE( km2) has characteristics of Babine style porphyry deposits (Bell – 411,000 oz Au; 303,000 T Cu from 77mt ore – .

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  • What is a Porphyry Copper Deposit?

    bodies are very large, generally containing from 100 million to several billion tons of copper ore with a copper content of % to %. The majority of porphyry copper deposits occur adjacent to subduction zones ( Ring of Fire around the Pacific Ocean), which form along continental margins ( Andes Mountains) and island

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  • MICROTHERMOMETRY AND RAMAN SPECTROSCOPY OF FLUID .

    Pintea I. (1993) Microthermometry of the hydrosaline melt inclusions from copper porphyry ore deposits Apuseni Mountains, Romania. Arch. Mineral. XLIX, p. 165167, Warsaw, Poland.

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  • How are porphyry copper deposits formed ...

     · Porphyry copper deposits are copper ore bodies that are formed from hydrothermal fluids that originate from a voluminous magma chamber several kilometers below the deposit itself. In later stages, circulating meteoric fluids may interact with the magmatic fluids.

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  • Ore Deposit Models – 1. Porphyry Copper Deposits ...

    Ore Deposit Models – 1. Porphyry Copper Deposits. An article from journal Geoscience Canada (Volume 7, Number 2, June 1980, pp. 392), on Érudit.

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  • Ore Fluid Chemistry in SuperGiant Porphyry Copper Deposits

    Ore Fluid Chemistry in SuperGiant Porphyry Copper Deposits. Laser ablation Inductively Coupled Plasma Mass Spectrometry (ICPMS) analysis of fluid inclusions trapping mineralising solutions in major porphyrycopper deposits indies that copper concentrations can reach 103 104 ppm in both dilute, CO2bearing fluids and in high salinity brines.

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  • Porphyry copper deposits

     · Porphyry copper deposits Epithermal deposits originate in or nearby porphyritic intrusives which were saturated by water as they intruded in shallow areas of the crust (less than 6 km depth(. The developing hydrothermal systems are characterized by the interaction, to different degrees, of fluids coming directly from the parental intrusive and from meteoric .

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  • The Origin of Cu/Au Ratios in PorphyryType Ore Deposits

     · The relative proportions of ore metals (Cu, Au, and Mo) in porphyrytype deposits are variable, and systematic criteria to explain this variation are difficult to isolate . Crustal magmatic processes may have an important influence on metal ratios, whereas hydrothermal precipitation within the porphyry vein network appears not to strongly fractionate chemically .

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  • PHYSIOCHEMICAL CHARACTERISTICS DURING POTASSIC .

    at Ajo, where the highest ore grades are found in potassic alteration zones (Gilluly, 1946; Dixon, 1966). Deposition of the sulfides, however, occurred after the introduction of secondary Kfeldspar in these zones. These relations suggest an intimate connection in this porphyry copper deposit between potassic alteration and copper ore

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  • Ore Deposit Models – 1. Porphyry Copper Deposits ...

    W. J. McMillan Geological Division, Ministry of Energy, Mines and Petroleum Resources, Victoria, British Columbia

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  • PorterGeo Database

    These intrusive episodes have associated ore deposits of differing styles, including alkalic to shoshonitic porphyry CuAu deposits at Cadia (456 to 454 and 438 Ma), Kaiser and Northparkes (episodic activity from 484 to 439 Ma); alkalic epithermal AuZn at Cowal (~439 Ma K diorite to quartz monzonites); calcalkaline porphyry CuAu mineralisation at Copper Hill (~450 Ma), .

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  • Geology of Porphyry Copper Deposits

     · Porphyry copper deposits 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 deposits world. As a mining interested learner, the geology of porphyry copper deposits is vital to your eduion.. Now in the first Exploration Geology Course I discussed .

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  • (PDF) The formation of porphyry copper deposits

     · Porphyry ore deposits are the source of much of the copper, molybdenum, gold and silver used by humans. Porphyry ore typically forms in magmatic arcs above subduction zones. However, generation of ...

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