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  • Geology of Porphyry Copper Deposits

    2020-6-25  Porphyry deposits and IOCG’s are the world’s primary source of copper and they account for more than 60% of the copper production globally but in addition to copper they also supply 100% of the world’s molybdenum production, 10 to 15% of global uranium production and a significant proportion of the world’s gold production in short they ...

  • How to make porphyry copper deposits - ScienceDirect

    Cited by: 10
  • Porphyry copper deposits in China Request PDF

    2020-4-30  Request PDF Porphyry copper deposits in China Porphyry Cu deposits in China contain a total resource of ~47 million tonnes (Mt) Cu at average grades ranging mostly from 0.2 to

  • How Much Water in Basaltic Melts Parental to

    Author: Massimo Chiaradia
  • Porphyry copper deposit mineralogy Britannica

    2018-11-20  Porphyry copper deposit, large body of rock, typically a porphyry of granitic to dioritic composition, that has been fractured on a fine scale and through which chalcopyrite and other copper minerals are disseminated.Porphyry copper deposits commonly contain hundreds of millions of metric tons of ore that averages a fraction of 1 percent copper by weight; although they are low-grade, the ...

  • (PDF) The formation of porphyry copper deposits

    Porphyry copper deposits, currently being the dominant source for Cu ± Mo ± Au, are formed in arc-related settings and temporally and spatially associated with large voluminous calc-alkaline to ...

  • Porphyry - an overview ScienceDirect Topics

    Porphyry deposits are large, low- to medium-grade deposits in which primary (hypogene) ore minerals are dominantly structurally controlled and are spatially and genetically related to felsic to intermediate porphyritic intrusions (Kirkham, 1971, 1972).The main metals in a porphyry are Cu, Mo, and smaller amounts of gold, although Sn, W, and Ag can be found in some porphyry deposits (Kirkham ...

  • PORPHYRY COPPER DEPOSITS OF THE AMERICAN

    2019-8-7  Genesis of Porphyry Copper Deposits: The Behavior of Water, Chloride, and Copper in Crystallizing Melts ..... 69-82 JEAN S. CLINE Hydrothermal Fluids and Hydrothermal Alteration in Porphyry Copper Deposits .. .. ..... 83-93 RICHARD E. BEANE AND ROBERT 1. BODNAR

  • PORPHYRY DEPOSITS - Earth Science

    2017-6-26  The major products from porphyry copper deposits are copper and molybdenum or copper and gold. The term porphyry copper now includes engineering as well as geological considerations; It refers to large, relatively low grade, epigenetic, intrusion-related deposits that can be mined using mass mining techniques.

  • Generation of porphyry copper deposits by gas–brine ...

    2015-2-9  Porphyry copper deposits, that is, copper ore associated with hydrothermal fluids rising from a magma chamber, supply 75% of the world’s copper. They are typically associated with intrusions of ...

  • Porphyry copper deposit mineralogy Britannica

    2018-11-20  Porphyry copper deposit, large body of rock, typically a porphyry of granitic to dioritic composition, that has been fractured on a fine scale and through which chalcopyrite and other copper minerals are disseminated.Porphyry copper deposits commonly contain hundreds of millions of metric tons of ore that averages a fraction of 1 percent copper by weight; although they are low-grade, the ...

  • Porphyry Deposits: The World's Largest Source of

    2019-10-17  Porphyry Copper deposits form along convergent plate margins or more specifically, ancient subduction zones. As the dense oceanic crust becomes consumed by the mantle it begins to melt. This melting or “partial melting” of the crust creates magma that is less dense and begins to intrude into the overlying continental crust.

  • Using zircon trace element composition to assess

    2020-2-27  The Late Triassic Guichon Creek batholith is a large (~ 1800 km2), composite, zoned batholith that hosts several large porphyry Cu-Mo deposits of the Highland Valley Copper district. The batholith consists of intrusive rocks that range in composition from gabbro to quartz monzonite. Adjacent to the mafic margin of the batholith is the Gump Lake granodiorite to quartz monzonite stock.

  • A Plate Tectonic Model for the Origin of Porphyry Copper ...

    2018-12-12  Porphyry Copper Deposits RICHARD H. SILLITOE Abstract The theory of lithosphere plate tectonics, embodying the concepts of sea-floor spread- ing, transform faulting, and underthrusting at continental margins and island arcs, is employed as a basis for an actualistic, though speculative, model for the origin and space-time distribution of ...

  • The geological characteristics, geochemical signature and ...

    2019-8-28  mineralization. Porphyry copper deposits are large (commonly hundreds to thousands of million tonnes) and low to medium in grade (0.3 to 1.5% copper). The majority of gold-rich porphyry deposits occur in the circum-Pacific and commonly contain 0.3 to 1.6 g/t gold. The general characteristics of porphyry systems include:

  • The Southwestern North America Porphyry Copper

    The apparent lack of Eocene to Oligocene porphyry deposits is also difficult to account for; hypabyssal rocks of this age are quite common and copper-bearing polymetallic skarn and high-temperature replacement and vein deposits are locally associated with them, but there is only one small, low-grade porphyry deposit of this age documented in ...

  • How to make porphyry copper deposits - Ming Tang

    2020-6-10  Porphyry copper deposits (PCDs) represent shallow level intrusions (2–5 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

  • PORPHYRY COPPER DEPOSITS OF THE AMERICAN

    2019-8-7  Porphyry Copper Deposits of the American Cordillera Frances Wahl Pierce and John G. Bolm, Editors Arizona Geological Society Digest 20 1995

  • Tempo of magma degassing and the genesis of

    2017-1-12  Porphyry deposits are copper-rich orebodies formed by precipitation of metal sulphides from hydrothermal fluids released from magmatic intrusions that cooled at depth within the Earth’s crust.

  • Boyongan-Bayugo Group, Porphyry copper deposit

    Comments: Bayugo is located ~1.3 km NW of Boyongan and adjacent to the Exotic Copper Zone. Tonnage and grade represent weighted average for 43-101 compliant indicated and inferred resources for Bayugo at 0.4% Cu cutoff and for measured and indicated reserves and Kaly-an copper/gold project is an exploration area adjacent to (north of) Boyongan project area.

  • Porphyry copper deposit mineralogy Britannica

    2018-11-20  Porphyry copper deposit, large body of rock, typically a porphyry of granitic to dioritic composition, that has been fractured on a fine scale and through which chalcopyrite and other copper minerals are disseminated.Porphyry copper deposits commonly contain hundreds of millions of metric tons of ore that averages a fraction of 1 percent copper by weight; although they are low-grade, the ...

  • A Plate Tectonic Model for the Origin of Porphyry Copper ...

    2018-12-12  Porphyry Copper Deposits RICHARD H. SILLITOE Abstract The theory of lithosphere plate tectonics, embodying the concepts of sea-floor spread- ing, transform faulting, and underthrusting at continental margins and island arcs, is employed as a basis for an actualistic, though speculative, model for the origin and space-time distribution of ...

  • PORPHYRY COPPER DEPOSITS OF THE AMERICAN

    2019-8-7  Porphyry Copper Deposits of the American Cordillera Frances Wahl Pierce and John G. Bolm, Editors Arizona Geological Society Digest 20 1995

  • By-Products of Porphyry Copper and Molybdenum

    Porphyry Cu and porphyry Mo deposits are large to giant deposits ranging up to >20 and 1.6 Gt of ore, respectively, that supply about 60 and 95% of the world’s copper and molybdenum, as well as significant amounts of gold and silver.

  • The Japanese Porphyry Copper Enigma: Resource

    Porphyry Cu deposit may exist beneath the lithocap‐hosted Nansatsu‐type gold deposits. A 1200‐m hole was drilled beneath the Kasuga lithocap but did not intersect porphyry copper mineralization. On the basis of detailed examination of the alteration pattern and paleothermal environment, another target is. proposed in the Kasuga area.

  • Why No Porphyry Copper Deposits in Japan and

    Antonio Arribas, Toshio Mizuta, Potential for Porphyry Copper Deposits in Northern Tōhoku (or the Exploration Potential for Base and Precious Metal Deposits in Japan 2020), Resource Geology, 10.1111/rge.12167, 68, 2, (144-163), (2018).

  • How to make porphyry copper deposits - Ming Tang

    2020-6-10  Porphyry copper deposits (PCDs) represent shallow level intrusions (2–5 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

  • A Special Issue Devoted to Porphyry Copper Deposits of ...

    2011-9-1  A total resource (including production) of about 400 million tons (Mt) of fine copper has been identified in 50 porphyry copper deposits and numerous prospects (Fig. 1). Considering 10 Mt of contained fine copper as a minimum tonnage to classify a porphyry copper deposit as a giant ore deposit, the Chilean cordillera contains nine of the 16 giant porphyries along the circum-Pacific belt.

  • Porphyry Copper Systems* - University of Utah

    2012-8-4  Porphyry Copper Systems* RICHARD H. SILLITOE† 27 West Hill Park, Highgate Village, London N6 6ND, England Abstract Porphyry Cu systems host some of the most widely distributed mineralization types at convergent plate boundaries, including porphyry deposits centered on intrusions; skarn, carbonate-replacement, and sediment-

  • 中国地质科学院研究生院

    High-Mg diorite from Qulong in southern Tibet: Implications for the genesis of adakite-like intrusions and associated porphyry Cu deposits in collisional orogens: Journal of Petrology, v. 56, p. 227-254.

  • 中国地质科学院研究生院

    High-Mg diorite from Qulong in southern Tibet: Implications for the genesis of adakite-like intrusions and associated porphyry Cu deposits in collisional orogens: Journal of Petrology, v. 56, p. 227-254.

  • Porphyry copper deposits in China - Open Access

    Porphyry Cu deposits in China contain a total resource of ~47 million tonnes (Mt) Cu at average grades rangingmostly from 0.2 to 0.7% Cu (most Approximately 50% of the giant and ~35% of the intermediate porphyry Cu deposits in China formed in arcsettings. The Xiongcun, Pulang, Duobuza, Bolong, and Naruo deposits in Tibet formed in continental arc settings, and the Central Asian porphyry Cu ...

  • Porphyry Copper Systems* - University of Utah

    2012-8-4  Porphyry Copper Systems* RICHARD H. SILLITOE† 27 West Hill Park, Highgate Village, London N6 6ND, England Abstract Porphyry Cu systems host some of the most widely distributed mineralization types at convergent plate boundaries, including porphyry deposits centered on intrusions; skarn, carbonate-replacement, and sediment-

  • Geology of the Porphyry Copper Deposits of the

    2020-6-20  Corpus ID: 127804675. Geology of the Porphyry Copper Deposits of the Western Hemisphere @inproceedings{Hollister1978GeologyOT, title={Geology of the Porphyry Copper Deposits of the Western Hemisphere}, author={Victor F. Hollister}, year={1978} }

  • [PDF] Porphyry Copper Systems Semantic Scholar

    Porphyry Cu systems host some of the most widely distributed mineralization types at convergent plate boundaries, including porphyry deposits centered on intrusions; skarn, carbonate-replacement, and sediment-hosted Au deposits in increasingly peripheral locations; and superjacent high- and intermediate-sulfidation epithermal deposits. The systems commonly define linear belts, some many ...

  • Geological characteristics of the Pulang porphyry copper ...

    The Pulang porphyry copper deposit is located on the eastern margin of the Dege-Zhongdian block on the western side of the Garze-Litang junction zone, in the southern segment of the Indosinian Yidun-Zhongdian island-arc belt. The strata of the copper district are ...

  • Isotope geochemistry of Chundu porphyry copper deposit in ...

    The Chundu porphyry copper deposit is a new deposit discovered in recent years,which ore bodies hosted in the granodioritic porphyry,contact zone between rock body and its wall rock.Based on the geological feature,isotopic geochemistry of the Chundu porphyry ...

  • Types of Copper Deposits in the World An Investor's ...

    Porphyry copper deposits are low grade, but are important sources of copper because they can be worked at a large scale for low costs. They typically contain between 0.4 and 1 percent copper in ...

  • Porphyry copper deposits in South Mongolia

    6(3), 2016 Porphyry copper deposits in South Mongolia 137 and it makes almost 100% increase in comparison with last years production. Main part of Mongolian copper reserve is detected in the porphyry type copper-molybdenum and copper-gold deposits, as

  • Porphyry Copper Deposits of the American Cordillera

    2019-12-14  A tabulation of grade and tonnage of porphyry copper ores of the region has been published by Gilmour (1982) and sum­ marized by Titley and Anthony (1989) and Titley (1994). Re­ serves in 1989 have been listed by Beard (1989). Production figures summarized for 45 porphyry copper deposits