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 ...Web

The ndida porphyry copper deposit, located in northern Chile, was one of the two largest copper producers of the world in the 1990s. The hydrothermal evolution of this deposit is associated with the emplacement of a late Eocene-Oligocene quartz monzonitic to granodioritic intrusive stock complex composed of at least three intrusive …Web

Much of the world's economic copper resources are hosted in porphyry copper deposits (PCDs), shallow level magmatic intrusions associated mostly with thick (> 45 km) magmatic arcs, such as mature island arcs and continental arcs.However, a well-known, but unresolved paradox, is that arc magmas traversing thick crust, particularly in …Web

Intrusive rock units, which form the permissive tracts for porphyry copper deposits in the Kerman Belt, are clustered; however, the porphyry copper deposits within the permissive tracts generally show random distribution. (4) Predictive prospectivity modeling can be used for exploration targeting of mineralized intrusive bodies in the …Web

Orange circles and the P ebble Copper and Bingham deposits in red symbols are the ten largest porphyry Cu deposits, based on the contained Cu endowment. The Cadia, Grasberg, Oyu T olgoi, Kalmakyr ...Web

We tested this hypothesis through an integration of all the relevant data available from the main Andean porphyry copper deposits. This region was selected because it constitutes by far the largest known Cu concentration in the planet (985 Mt of Cu; Sillitoe, 2012) and individual deposits of the belts include the largest known …Web

The Yulong porphyry copper deposit (6.5 Mt at 0.46 % Cu) in eastern Tibet was formed in a post-collisional setting. New zircon U–Pb and U–Th/He ages, apatite U–Th/He ages and in-situ zircon Hf isotopic and trace element data for the Yulong ore-bearing adakitic porphyries elucidate the thermal history and petrogenesis of the …Web

The transition to new and green technologies is increasing the need for metals 1, 2 such as copper for which demand is forecast to increase by 140–350% from 2010 to 2050 3, 4. Porphyry-type ...Web

Cu/Au atomic ratios of porphyry copper ore deposits form a continuous range from about 5000 to 5,000,000 with a median near 40,000, which separates gold-rich and gold-poor deposits. Gold is found in porphyry copper deposits in solid solution in Cu–Fe and Cu sulfides and as small grains of native gold, usually along boundaries of …Web

Zhunuo is a porphyry deposit in the western GPCB. It was discovered in 2004 by the No. 2 Geology Survey Team of Tibet, China. Zhunuo contains 2.3 Mt copper metals at an average grade of 0.57% (Sun et al. 2018).Previous studies have reported zircon U-Pb ages, geochemistry of igneous rocks and molybdenite Re-Os ages for the deposit …Web

Porphyry deposits are very large, polymetallic systems that typically contain copper along with other important metals. Much of today's mineral production depends on porphyries: 60% of copper, 95% of molbdenum, and 20% of …Web

Porphyry deposits are large, low-grade metal ore bodies that are formed from hydrothermal fluids derived from an underlying magma reservoir. They are important as …Web

porphyry copper deposits, such as Bingham and Bajo de la. Alumbrera, sulphide deposition was primarily due to cooling. of metal-rich, saline brines below 400ºC (Ulrich et al., 2001;Web

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 …Web

Introduction. More than two thirds of the annual global production of copper (Singer, 2017) comes from 'porphyry copper' deposits – the very large hydrothermal ore deposits that formed inside the cores of volcanic systems that were active in magmatic arcs throughout the Phanerozoic (Henley and Berger, 2013; Henley and Ellis, 1983; Sillitoe, …Web

Porphyry copper deposits are large. They commonly consist of hundreds of millions to billions of tonnes of ore. However, they contain typically only 0.5–1.5% copper and are therefore classified ...Web

Significant features of porphyry copper deposits were observed in the southern part of the Eastern Desert of Egypt. These include wide distribution of gossans cover and pyrite-rich zones, chalcopyrite disseminations, zoned hydrothermally altered mafic volcanics, hydrothermal breccia pipes, and quartz-vein sets in close association with …Web

The Pulang deposit is a large-scale Late Triassic porphyry copper deposit in this region and is located at 28 • 02′19″ N, 99 • 59′23″ E, with an elevation of over 3300 m (Fig. 2c). ...Web

Both porphyry copper deposits and their host porphyritic stocks and plutons are likely the twinborn products of ore-forming fluid-rich porphyry magmas. Recent research (Xu et al., 2009 b) suggests that many porphyry bodies were shallow intrusions of mixed melts that contained phenocrysts and glomeroporphyritic aggregates, ...Web

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 …Web

They formulated the models using a global data set of zircon chemistry, which is used to evaluate the porphyry copper deposits in magma. The authors focused the models on 15 trace elements. They ...Web

For porphyry copper deposits, the world's primary source of Cu, Mo, and Re, identifying the dynamic processes that control their emplacement in the upper crust can guide future exploration ...Web

Porphyry copper ore deposits mostly form beneath volcanoes, where magmas derived from a mid- to upper-crustal magma reservoir intrude into the shallower …Web

1 Introduction. Empirical evidence for high oxidation state of porphyry-copper-deposit (PCD) generative arc magmas has been noted and discussed for decades (Burnham & Ohmoto, 1980; Hutchinson & Dilles, 2019; Park et al., 2021).These magmas typically record oxygen fugacity (fO 2) values equal or greater than the Ni–NiO fO 2 …Web

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. ...Web

The cumulative probability of forming a large porphyry Cu deposit at any given time in an arc magmatic system (i.e., a single batholith-linked volcanoplutonic complex) is estimated to be ~0.001%, and less than 1/10 of these deposits will be …Web

In porphyry copper systems, significant advances in the understanding of deposit footprints have been made over the last decades, including that of sericitic alteration (Watanabe and Hedenquist ...Web

Intrusions Associated with PorphyryCopper Deposits Intrusions associated with, porphyry copper deposits arediverse but generally felsic and differentiated. Those in island arc settingshave primitive strontium isotopic ratios (87Sr/86Sr of 0.702 to 0.705) and, therefore, are derived either from upper mantle material orrecycled oceanic crust.Web

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 …Web

Porphyry Cu deposits in China contain a total resource of ~47 million tonnes (Mt) Cu at average grades ranging mostly from 0.2 to 0.7% Cu (most <0.5% Cu), accounting for 42% of China's Cu reserves.Web

xvi, 287 pages 32 cm Collects 23 technical papers examining the geology of porphyry copper deposits in the southwestern United States and adjoining regions in Mexico, presenting both general summaries of the gross characteristics of these mineral deposits and descriptions of representative samplings of these depositsWeb

Porphyry copper deposits are formed by aqueous fluids exsolved by differentiated, mantle-derived magmas variably mixed with crustal melts. Water is essential to form porphyry Cu mineralization, and this explains why these deposits are found only at convergent margin settings, where subduction has enriched the mantle source of …Web

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.These deposits form at ...Web