porphyry copper gold deposits

Gold in porphyry copper deposits: its abundance and fate ...

2002-10-1  Gold abundances in porphyry copper deposits vary greatly, complicating efforts to define gold-rich porphyry copper deposits. The original definition was based on the Au/Mo ratios of porphyry copper deposits with no reference to their copper content , and resulted in the suggestion that gold-rich deposits were found largely in island arc regions (Kesler, 1973).

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Gold in Porphyry Copper Deposits: Experimental ...

2000-3-1  If gold is present in the ore-forming solutions, more of it will be deposited in high-temperature porphyry copper-gold deposits where it will be closely associated with bornite. Coexisting magnetite in these deposits should generate magnetic anomalies.

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Gold in porphyry copper deposits: its abundance and fate ...

The gold reserves can reach as several hundred or even thousands of tons, such as Grasberg, Bingham, and Kal'makyr.Such deposits can be referred to as Au-rich porphyry copper deposits or porphyry Cu-Au deposits (Sillitoe, 1979; Kesler et al., 2002).According to the composition of its beneficial components, porphyry copper systems can be divided ...

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Reduced porphyry copper-gold deposits: A new variation on ...

2000-6-1  These “reduced” porphyry Cu-Au deposits lack primary hematite, magnetite, and sulfate minerals (i.e., anhydrite), but contain abundant hypogene pyrrhotite, commonly have carbonic-rich ore fluids with substantial CH 4, and are associated with ilmenite-bearing, reduced I-type granitoids.

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(PDF) Distribution of gold in porphyry copper deposits

Gold grades are less than 0.05 ppm in the porphyry copper-molybdenum deposits. Between these end members is an economically important group containing significant amounts of both gold

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Gold endowments of porphyry deposits controlled by ...

2020-1-14  Porphyry copper–gold deposits are large volume, low-grade disseminations formed by precipitation of copper and gold (plus molybdenum) from fluids of magmatic origin 1.

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Geophysical signatures of copper-gold porphyry and ...

2015-3-19  situ measurements of porphyry copper deposits 1.5. Cross-section of alteration zones characteristic of high-sulphidation deposits 1.6. Diagram of hypothetical low sulphidation epithermal gold deposit to illustrate the effect of erosion level on geophysical responses 2.1 Batu Hijau geology, sulphide content, alteration, and RTP magnetics

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Geophysical Signatures of Copper-Gold Porphyry and ...

2019-1-16  epithermal deposits. Unlike the Copper-Molybdenum porphyry deposits, gold-rich porphyries have an association of mineralisation with magnetite. The predicted magnetic response over the different alteration zones and the role of remanence in increasing or decreasing the anomaly strength is covered. The IP response of a porphyry system is ...

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DISCOVERING WORLD CLASSGOLD AND GOLD-COPPER

2021-2-1  03 THE TARGETS: NEW PROSPERITY GOLD -COPPER PORPHYRY DEPOSIT MODEL 15 EMERSON (50 km2) and GOATHORN (17.8 km2) have characteristics of New Prosperity gold-copper porphyry (7.7M oz. Au; 3.6 billion lb. Cu) JACOBITE(17.8 km2) has characteristics of Babine style porphyry deposits (Bell – 411,000 oz Au; 303,000 T Cu from 77mt ore – Noranda ...

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(PDF) The formation of porphyry copper deposits

2016-11-5  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

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Gold in Porphyry Copper Deposits: Experimental ...

2000-3-1  If gold is present in the ore-forming solutions, more of it will be deposited in high-temperature porphyry copper-gold deposits where it will be closely associated with bornite. Coexisting magnetite in these deposits should generate magnetic anomalies. Lower temperature deposits will contain less gold, which is hosted by pyrite as well as ...

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Reduced porphyry copper-gold deposits: A new variation on ...

2000-6-1  Reduced porphyry copper-gold deposits: A new variation on an old theme Stephen M. Rowins. Stephen M. Rowins 1. Department of Earth and Ocean Sciences, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada. Search for other works by this author on: GSW.

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(PDF) Distribution of gold in porphyry copper deposits

Gold grades are less than 0.05 ppm in the porphyry copper-molybdenum deposits. Between these end members is an economically important group containing significant amounts of both gold and ...

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Porphyry Copper, Gold, and Molybdenum Deposits:

2018-6-20  Porphyry Copper, Gold, and Molybdenum Deposits: Preface . EDITOR: DAVID R. COOKE. CODES – The Australian Research Council’s Centre for Excellence in Ore Deposit Research, University of Tasmania, Private Bag 126, Hobart, Tasmania 7001, Australia . Porphyry deposits are the world’s principal resources of Cu, Mo, and Re, and are major

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Geophysical signatures of copper-gold porphyry and ...

2015-3-19  situ measurements of porphyry copper deposits 1.5. Cross-section of alteration zones characteristic of high-sulphidation deposits 1.6. Diagram of hypothetical low sulphidation epithermal gold deposit to illustrate the effect of erosion level on geophysical responses 2.1 Batu Hijau geology, sulphide content, alteration, and RTP magnetics

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DISCOVERING WORLD CLASSGOLD AND GOLD-COPPER

2021-2-1  03 THE TARGETS: NEW PROSPERITY GOLD -COPPER PORPHYRY DEPOSIT MODEL 15 EMERSON (50 km2) and GOATHORN (17.8 km2) have characteristics of New Prosperity gold-copper porphyry (7.7M oz. Au; 3.6 billion lb. Cu) JACOBITE(17.8 km2) has characteristics of Babine style porphyry deposits (Bell – 411,000 oz Au; 303,000 T Cu from 77mt ore – Noranda ...

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Preliminary Model of Porphyry Copper Deposits

2008-10-9  Copper is the primary commodity of economic interest in most porphyry copper deposits, although some deposits with low to very low copper grades are mined principally for their gold (for example, Çopler, Turkey) and(or) molybdenum (for example,

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(PDF) The formation of porphyry copper deposits

2016-11-5  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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Ridge subduction and porphyry copper-gold mineralization ...

2010-3-3  Singer D A, Berger V I, Moring B C. Porphyry Copper Deposits of the World: Database and Grade and Tonnage Models. Open-File Report, 2008-1155, 2008. 36. Hollings P, Cooke D, Clark A. Regional geochemistry of tertiary igneous rocks in central Chile: Implications for the geodynamic environment of giant porphyry copper and epithermal gold ...

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Exploration of Porphyry Copper Deposits

2015-6-22  So how do we explore for Porphyry Copper Deposits which are completely covered by barren younger rocks? Well let’s back up a bit, we know that porphyries form under large subduction related volcanoes and that most of these are located under the ring of fire

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Gold in Porphyry Copper Deposits: Experimental ...

2000-3-1  If gold is present in the ore-forming solutions, more of it will be deposited in high-temperature porphyry copper-gold deposits where it will be closely associated with bornite. Coexisting magnetite in these deposits should generate magnetic anomalies. Lower temperature deposits will contain less gold, which is hosted by pyrite as well as ...

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(PDF) Distribution of gold in porphyry copper deposits

Analysis of 55 porphyry copper deposits demonstrates a continuum between porphyry copper-gold deposits emplaced at a median depth of 1 km, with a median size of 160 million metric tons of copper ...

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Super Porphyry Copper Gold Deposits - A Global ...

The Dexing porphyry copper field in Jiangxi, China, is defined by three porphyry copper deposits which are, from southeast to northwest, Fujiawu‚ Tongchang and Zhushahong respectively, and by the Guanmaoshan gold deposit which lies between Fujiawu and Tongchang.

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UNITED STATES DEPARTMENT OF THE INTERIOR U.S.

2010-11-6  molybdenum content of porphyry copper-gold deposits is related to the fact that, in many systems, molybdenum is distributed as a peripheral zone outside the copper-gold orebody that itself has a low molybdenum grade. At Dos Pobres (Langton and Williams, 1982),

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Geophysical signatures of copper-gold porphyry and ...

2015-3-19  situ measurements of porphyry copper deposits 1.5. Cross-section of alteration zones characteristic of high-sulphidation deposits 1.6. Diagram of hypothetical low sulphidation epithermal gold deposit to illustrate the effect of erosion level on geophysical responses 2.1 Batu Hijau geology, sulphide content, alteration, and RTP magnetics

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Timescale of Forming a Giant Porphyry Copper-Gold

2008-10-13  Page, R W and McDougall, I, 1972. Ages of mineralization of gold and porphyry copper deposits in the New Guinea Highlands, Economic Geology, 67(8):1034-1048. Simmons, S F and Brown, K L, 2006. Gold in magmatic hydrothermal solutions and the rapid formation of a giant ore deposit, Science, 314(5797):288-291. Wallace, P J, 2005.

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DISCOVERING WORLD CLASSGOLD AND GOLD-COPPER

2021-2-1  03 THE TARGETS: NEW PROSPERITY GOLD -COPPER PORPHYRY DEPOSIT MODEL 15 EMERSON (50 km2) and GOATHORN (17.8 km2) have characteristics of New Prosperity gold-copper porphyry (7.7M oz. Au; 3.6 billion lb. Cu) JACOBITE(17.8 km2) has characteristics of Babine style porphyry deposits (Bell – 411,000 oz Au; 303,000 T Cu from 77mt ore – Noranda ...

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Geological-Structural Position and Formation Conditions

3. Geological and Structural Environment for Formation of Gold-Bearing Porphyry Copper Deposits. Porphyry copper deposits of Mekhmanian OMS belong to representatives of Hollister “diorite” model which are characterized by high values of copper-molibden ratio and relatively higher composition of noble metals in ores.

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Ridge subduction and porphyry copper-gold mineralization ...

2010-3-3  Singer D A, Berger V I, Moring B C. Porphyry Copper Deposits of the World: Database and Grade and Tonnage Models. Open-File Report, 2008-1155, 2008. 36. Hollings P, Cooke D, Clark A. Regional geochemistry of tertiary igneous rocks in central Chile: Implications for the geodynamic environment of giant porphyry copper and epithermal gold ...

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Geochemical Characteristics of Intrusive Rocks ...

porphyry copper-gold deposits in eastern Mindanao 3.1 The eastern Mindanao copper-gold belt The mineralized areas in eastern Mindanao consist of several porphyry copper deposits and prospects such as Boyongan in the north-eastern portion and the Tagpura-Kalamatan-Maangob (Batoto area), Amacan and Kingking in the south-eastern portion (Figs 1, 3).

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