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Porphyry Copper Ore Deposits

Summary of Porphyry Copper Deposit Model A Introduction B Deposit Type and Associated Commodities C History of Porphyry Copper Deposits D Regional Environment E Physical Description of Deposits F Geophysical Characteristics G Hypogene Ore Characteristics H and K Hypogene and Supergene Gangue Characteristics I Hydrothermal

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  • Porphyry Copper Deposit Model USGS
    Porphyry Copper Deposit Model USGS

    Summary of Porphyry Copper Deposit Model A Introduction B Deposit Type and Associated Commodities C History of Porphyry Copper Deposits D Regional Environment E Physical Description of Deposits F Geophysical Characteristics G Hypogene Ore Characteristics H and K Hypogene and Supergene Gangue Characteristics I Hydrothermal

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  • Overview of the Yerington Porphyry Copper District
    Overview of the Yerington Porphyry Copper District

    The Yerington district Nevada hosts at least four porphyry copper deposits and several small Fe oxidecoppergold lodes within a middle Jurassic batholith and its volcanic cover The contact aureole of the batholith contains early garnetpyroxene hornfels and endoskarn later copperbearing andradite skarn deposits and lateststage large Fe

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  • The 10 biggest copper mines in the world Mining
    The 10 biggest copper mines in the world Mining

    Nov 04 2013 Toquepala produced about 152000t of copper in 2012 including 120000t of copper concentrates and 32000t of copper cathodes Ore is extracted from the Toquepala porphyry copper deposit located in the southernmost Andes Mountains of Peru The extracted ore is refined at an onsite concentrator with a milling capacity of 60000tpd

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  • Copper Ore Processing Ore Copper Gold Ore Mining Equi
    Copper Ore Processing Ore Copper Gold Ore Mining Equi

    Copper Processing Ores Britannica Copper processing copper processing ores principal forms in which copper ores are found include native copper porphyry copper massive deposits and mixed ores native copper is simply the metal found unadulterated in nature occasionally copper is still found in its native form but more frequently it is mixed with other minerals some of which may have value

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  • Triggers for the formation of porphyry ore deposits in
    Triggers for the formation of porphyry ore deposits in

    Oct 13 2013 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

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  • Quarrying of porphyry copper
    Quarrying of porphyry copper

    Hydrothermal alteration of the rocks of the Morenci porphyry copper deposit is well described in Lindgren 1905a Reber 1916 Bennett 1974 Preece Stegen and Weiskopf 1993 and Walker 1995 Descriptions of the Tertiary volcanic and sedimentary rocks are primarily derived from recent mapping by Ferguson and Enders this report

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  • What is a Porphyry Copper Deposit by David F Briggs
    What is a Porphyry Copper Deposit by David F Briggs

    Jan 11 2014 Few porphyry copper deposits are greater than 340 million years old Formed at relatively shallow depths in the earths crust less than 15000

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  • 212 Porphyry ore deposits OpenLearn
    212 Porphyry ore deposits OpenLearn

    Porphyry deposits can however be very large so by extracting and processing very large amounts of low grade ore enough copper can be found for it to be economically worthwhile The need to remove very large amounts of very hard igneous rocks means that porphyry ore deposits werent mined at all until 1905 when powered shovels and rail

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  • How to Locate Copper Deposits Sciencing
    How to Locate Copper Deposits Sciencing

    Look for igneous rocks Igneous rocks are volcanic in origin and copper is usually located in igneous rock formations that are surrounded by rocks that have been altered by volcanic pressure and high temperatures These deposits are called porphyry copper deposits In addition search for rocks that are green or pieces of ore that have green

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  • Generation of porphyry copper deposits by gasbrine
    Generation of porphyry copper deposits by gasbrine

    Porphyry copper deposits that is copper ore associated with hydrothermal fluids rising from a magma chamber supply 75 of the worlds copper They are typically associated with intrusions of

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  • Porphyry copper deposit explained
    Porphyry copper deposit explained

    Porphyry copper deposit explained Porphyry copper deposits are copper orebodies that are formed from hydrothermal fluids that originate from a voluminous magma chamber several kilometers below the deposit itself Predating or associated with those fluids are vertical dikes of porphyritic intrusive rocks from which this deposit type derives its name In later stages circulating meteoric

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  • King Copper AZGS
    King Copper AZGS

    These are copper ore deposits associated with intrusive igneous rocks similar to granite Porphyry describes the typical texture of these rocks in which individual mineral grains about a tenth to a half inch in size are surrounded by smaller grains that are barely visible to the naked eye

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  • Types of Copper Deposits in the World An Investors
    Types of Copper Deposits in the World An Investors

    To date some of the biggest copper finds have been the Kennecott copper mine a largescale porphyry deposit the Chuquicamata copper porphyry complex and of course Escondida

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  • PorphyryCopper Ore Shells Form at Stable Pressure
    PorphyryCopper Ore Shells Form at Stable Pressure

    Dec 21 2012 Porphyrytype ore deposits are among the worlds premier metal resources supplying most of the copper molybdenum and a substantial part of gold production They form in response to focused expulsion of metalbearing saline fluids from large chambers of cooling hydrous magma A restricted zone of oremineral precipitation within a more extensive plume of fluid upflow is thought to

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  • Porphyry Copper Gold and Molybdenum Deposits
    Porphyry Copper Gold and Molybdenum Deposits

    Porphyry Copper Gold and Molybdenum Deposits Preface EDITOR DAVID R COOKE CODES The Australian Research Councils Centre for Excellence in Ore Deposit Research University of Tasmania Private Bag 126 Hobart Tasmania 7001 Australia Porphyry deposits are the worlds principal resources of Cu Mo and Re and are major

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  • Copper processing Ores Britannica
    Copper processing Ores Britannica

    Copper processing Copper processing Ores Principal forms in which copper ores are found include native copper porphyry copper massive deposits and mixed ores Native copper is simply the metal found unadulterated in nature Occasionally copper is still found in its native form but more frequently it is mixed with other minerals some of which may have value themselves

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  • GEOLOGY AND EVOLUTION OF THE COPPER FLAT PORPHYRY
    GEOLOGY AND EVOLUTION OF THE COPPER FLAT PORPHYRY

    The Copper Flat porphyry copper deposit in the northern part of the Hillsboro district was discovered in 1975 Castellano et al 1977 Dunn 1982 1984 although alteration and mineralization in the area suggested to earlier geologists that a porphyry copper deposit should occur

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  • porphyry Copper Deposits Ore TradeKey
    porphyry Copper Deposits Ore TradeKey

    porphyry copper deposits ore New East And West Company is a leading importer of porphyry copper deposits ore from USA

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  • PDF The formation of porphyry copper deposits
    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

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  • The formation of porphyry copper deposits SpringerLink
    The formation of porphyry copper deposits SpringerLink

    Copper is a moderately incompatible chalcophile element Its behavior is strongly controlled by sulfides The speciation of sulfur is controlled by oxygen fugacity Therefore porphyry Cu deposits are usually oxidized with oxygen fugacities FMQ 2 Mungall 2002 Sun et al 2015 The problem is that while most of the magmas at convergent margins are highly oxidized porphyry Cu deposits

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  • Porphyry Copper Deposits of the American Cordillera
    Porphyry Copper Deposits of the American Cordillera

    prosecution of the war the search for copper ores by 1942 had focused almost solely on discovery of new disseminated ore bodies and resulted in identification of 25 porphyry copper deposits by 1980 Among the first recognized as having porphyry copper potential by midcentury were the disseminated ores at Silver Bell

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  • 22 Porphyryepithermal mineral system Geoscience
    22 Porphyryepithermal mineral system Geoscience

    Although Mo is not recovered or reported from porphyry CuAu deposits of the Macquarie arc the Spinifex Ridge deposit contains a JORCcompliant ore reserve totalling 0295 Mt Mo and 0520 Mt Cu Table 221 the largest Mo resource in Australia

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  • How to make porphyry copper deposits ScienceDirect
    How to make porphyry copper deposits ScienceDirect

    Porphyry copper deposits PCDs represent shallow level intrusions 25 km in the crust Mineralization of Cu ores tend to occur at the tops of porphyry systems in cupolas Possible regimes where Cu may be mobilized include hydrothermal circulation at midocean ridge centers dehydration or melting of the subducting slab and late stage

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  • Ore Geology Reviews Journal
    Ore Geology Reviews Journal

    Ore Geology Reviews Supports open access View aims and scope Fluid inclusion systematics in porphyry copper deposits the supergiant Grasberg deposit Indonesia as a case study fractionation in the Tibetan Yulong CuMo deposit and its implications for mechanisms of molybdenite precipitation in porphyry ore systems Jia Chang

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  • Porphyry Copper Deposits in the Course of Time
    Porphyry Copper Deposits in the Course of Time

    Currently new porphyry copper deposits are formed somewhere in the world beneath active volcanic territory Size Grades Typically porphyry copper deposits are lowgrade yet being mined on a large scale via openpits resulting in a processing of at least a few 100 million tons averaging mostly below 1 copper

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  • Everything You Need to Know About Copper Porphyries
    Everything You Need to Know About Copper Porphyries

    Mar 11 2015 Porphyry deposits are very large polymetallic systems that typically contain copper along with other important metals Much of todays mineral production depends on porphyries 60 of copper 95 of molbdenum and 20 of gold comes from this deposit type

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  • Porphyry Copper Systems
    Porphyry Copper Systems

    alterationmineralization in the porphyry Cu deposits is zoned upward from barren early sodiccalcic through potentially oregrade potassic chloritesericite and sericitic to advanced argillic the last of these constituting the lithocaps which may attain 1 km in thickness if

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  • The Origin of CuAu Ratios in PorphyryType Ore Deposits
    The Origin of CuAu Ratios in PorphyryType Ore Deposits

    Microanalysis of major and trace elements in sulfide and silicate melt inclusions by laserablation inductively coupled plasma mass spectrometry indicates a direct link between a magmatic sulfide liquid and the composition of porphyrytype ore deposits Copper Cu gold Au and iron Fe are first concentrated in a sulfide melt during magmatic evolution and then released to an oreforming

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  • Porphyry Copper Gold Ore Under the Microscope
    Porphyry Copper Gold Ore Under the Microscope

    This is an ore from a zone of Copper Porphyry which was located in southeastern New Brunswick The overall grade of the ore was assayed at 35 copper and 600ppb AU or gold This deposit is actually a project which myself and another prospector have been looking at over the last year

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  • Epithermal Ore Deposits and Transition to the Porphyry
    Epithermal Ore Deposits and Transition to the Porphyry

    Most epithermal ore deposits form in the shallow 1 km depth magmatichydrothermal environment of volcanic arcs with a commonly asymmetric transition to deeper 153 km intrusionhosted ore deposits of the porphyry system

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