Porphyry Copper Deposits
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Porphyry Copper Deposits

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

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Porphyry Copper Deposits | Geology for Investors

2019-10-17 · Porphyry copper deposits are typically very-low grade with between 0.4 and 1% copper. The main mineral is chalcopyrite, which is finely disseminated through the host porphyritic rocks. The only reason these ore bodies are economic is because

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(PDF) The formation of porphyry copper deposits

Porphyry copper deposits (PCDs) hosted in subvolcanic intrusions at convergent margins are the primary world’s copper resources. However, the set of magmatic processes that lead to the ...

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Geology of Porphyry Copper Deposits

2021-1-21 · Understanding Geology of Porphyry Copper Deposits and formations using models around the World. Porphyry Copper Deposits are the largest source of Cu/Mo/Au.

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Porphyry copper deposits of the world - USGS

Porphyry copper deposits of the world. Information on porphyry copper deposits from around the world with grade and tonnage models, a general classification based on geologic setting, mineralogy, with data allowing locations of these deposits to be plotted using GIS.

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Porphyry copper deposits in China - CORE

Porphyry magma ascent andemplacement were controlled by regional shear zones (e.g., strike-slip fault systems) or extensional fracturearrays (e.g., normal fault systems) in postcollisional settings.Porphyry Cu deposits in China mostly show typical alteration zoning from inner potassic to outer propyliticzones, with variable phyllic and argillic ...

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17 questions with answers in PORPHYRY DEPOSITS |

2020-10-30 · The spatial association of porphyry copper deposits with arcs formed above current or former subduction zones was then discussed in detail by Sillitoe (1972).

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Porphyry Copper Deposits | Geology for Investors

2019-10-17 · Porphyry copper deposits are typically very-low grade with between 0.4 and 1% copper. The main mineral is chalcopyrite, which is finely disseminated through the host porphyritic rocks. The only reason these ore bodies are economic is because porphyries are huge, with hundreds of millions of tonnes available in a fairly low-cost mining setting. ...

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The formation of porphyry copper deposits

2017-8-26 · Most porphyry copper (Cu) deposits are distributed along convergent margins (Fig. 1). A porphyry deposit is a semi-closed system that usually formed at depths of 2–4 km (Sillitoe2010), but the controlling factors are still a topic of contention amongst scholars (Chiaradia2014;

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What is a Porphyry Copper Deposit?

2015-6-27 · Porphyry copper deposits are also important sources for other metals, including molybdenum, gold and silver. Minor amounts of rhenium, tellurium, arsenic, zinc and platinum group elements are also present in elevated concentrations within these systems and are recovered at some mining operations. ...

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Porphyry copper deposits of the world - USGS

Porphyry copper deposits of the world. Information on porphyry copper deposits from around the world with grade and tonnage models, a general classification based on geologic setting, mineralogy, with data allowing locations of these deposits to be plotted using GIS.

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How to make porphyry copper deposits - ScienceDirect

2020-1-1 · 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 mid-ocean ridge centers, dehydration or melting of the subducting slab, and late stage ...

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Gold in porphyry copper deposits: its abundance and

2002-10-1 · 1. Introduction. Porphyry copper deposits contain up to 100 t of gold and are among the largest reservoirs of gold in the upper crust (Kerrich et al., 2000).They are commonly surrounded by deposits and country rock containing gold that is thought to have been derived from them (Jones, 1992).Gold can be removed from porphyry copper systems by vapors that separate at high

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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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Gold in Porphyry Copper Deposits: Experimental ...

Phase equilibrium constraints for solutions with geologically reasonable reduced sulfur contents indicate that high-temperature porphyry copper-gold deposits will contain bornite and magnetite, whereas lower temperature deposits (whether primary or overprinted by phyllic alteration) will

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17 questions with answers in PORPHYRY DEPOSITS |

2020-10-30 · I want to known who is the first one put forward the concept of “porphyry deposit” The earliest paper I can get is "The porphyry copper deposits in their regional setting, in Titley, S.R., and ...

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Assessing British Columbia Porphyry Fertility Using Zircons

2019-4-22 · discover porphyry copper deposits, particularly in British Columbia (BC), where many porphyry systems occur within or around the edges of large batholiths. Zircon (Zr[Hf]SiO 4) is a common accessory mineral in granitoid rocks that host porphyry copper deposits. Trace-element composition of zircon is used to determine the age of the

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Porphyry Copper Deposits | Historical Perspectives of ...

Differences among porphyry copper deposits may in many cases reflect differences in timing and extent of interaction with meteoric water and the deposits’ postmineral histories. There is probably more than one tectonic mechanism capable of generating porphyry copper magmas of variable compositions.

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Preliminary Model of Porphyry Copper Deposits

2008-10-9 · For porphyry copper deposits in general, the compositions of the shallow intrusions that host porphyry copper deposits indi-cate that the deep melt reservoirs from which both the shallow intrusions and the ore fluids were derived may be compositionally calc-alkaline, alkali-calcic, or alkaline (Seedorff and others, 2005).

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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-

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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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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 ...

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Gold in Porphyry Copper Deposits: Experimental ...

Phase equilibrium constraints for solutions with geologically reasonable reduced sulfur contents indicate that high-temperature porphyry copper-gold deposits will contain bornite and magnetite, whereas lower temperature deposits (whether primary or overprinted by phyllic alteration) will

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Medet, Porphyry copper deposit - USGS

Bogdanov, B.D., 1986, Copper ore deposits in Bulgaria, in Petraschek, W.E., and Jankovi?, S., eds., Geotectonic evolution and metallogeny of the Mediterranean area ...

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Porphyry Deposits: General characteristics and

Porphyry Copper-Gold Deposits . Oyu Tolgoi: 2,467 Mt @ 0.68 wt % Cu, 0.32 g/t Au, (790 t Au) Batu Hijau: 1,644 Mt @ 0.44 wt % Cu, 0.35 g/t Au, (572 t Au) Frieda River: 1,103 Mt @ 0.61 wt % Cu, 0.32 g/t Au, (354 t Au) Porphyry Cu-Mo Deposits . El Teniente: 12,482 Mt @ 0.63 wt % Cu, 0.02 wt % Mo, 0.035 g/t Au, (437 t Au)

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Future Exploration for Arizona Porphyry Copper Deposits ...

2018-9-13 · Calderas are not related to porphyry copper deposits 3. Pb-Zn-Ag is not a zoning fringe of Stage 3 porphyry copper plutons 4. (However, Pb-Zn-Ag may be fringe to arsenical (tennantite) Stage 4 copper veins. Ex. Magma vein, Old Dominion vein) 5. Qtz-sericite-pyrite QSP is not exclusively associated with porphyry Copper.

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Assessing British Columbia Porphyry Fertility Using Zircons

2019-4-22 · discover porphyry copper deposits, particularly in British Columbia (BC), where many porphyry systems occur within or around the edges of large batholiths. Zircon (Zr[Hf]SiO 4) is a common accessory mineral in granitoid rocks that host porphyry copper deposits. Trace-element composition of zircon is used to determine the age of the

Read More