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Porphyry Copper Deposits

Porphyry (geology) - Wikipedia

The term porphyry is also used for a mineral deposit called a "copper porphyry". The different stages of cooling that create porphyritic textures in intrusive and hypabyssal porphyritic rocks also lead to a separation of dissolved metals into distinct zones.. This process, which occurs primarily when fluids are driven off the cooling magma, is one of the main reasons for the existence in the .

THE COPPER HILL PORPHYRY COPPER-GOLD PROJECT

THE COPPER HILL PORPHYRY COPPER-GOLD PROJECT SUMMARY The Copper Hill Cu-Au deposit contains 535,000 tonnes of copper and 1.47 million ounces of gold. It is located 5 kilometres north of Molong in eastern New South Wales and is held by Golden Cross Resources Ltd (GCR) (Figure 1). .

Porphyry copper deposit | Revolvy

Porphyry copper deposit Bingham Canyon mine in 2005. The gray rocks visible in the pit are almost all in the primary-sulfide ore zone. 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 .

What is a Porphyry Copper Deposit? - arizonageologicalsoc

porphyry copper deposits were the first type of metallic mineral deposit to be exploited by large-scale, bulk tonnage, open pit mining methods. Economies of scale and advances in technology have made it possible to profitably mine these deposits despite their relatively low ore grades.

Porphyry Copper | AZGS

Read more about Geology of a major new porphyry copper center in the Superior (Pioneer) District, Arizona The southern Arizona copper fields [Part I] Tolman, C.F., Jr., 1909, The southern Arizona copper fields [Part I]: Mining and Scientific Press, v. 99, no. 11, p. 356-360.

Porphyry Copper, Gold, and Molybdenum Deposits: Preface .

Mutschler et al., 1981; Wallace, 1991. Because some porphyry Mo deposits contain significant W, the few papers that document Mo-W and W porphyry deposits are also provided in this subsection. Breccias associated with porphyry copper deposits have been a source of fascination for many researchers.

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 .

Porphyry copper deposits of the world: database, maps, and .

The foundation of mineral deposit models is information about known deposits—the purpose of this publication is to make this kind of information available in digital form for a group of porphyry copper deposits. This publication contains a computer file of information on porphyry copper deposits around the .

Porphyry Copper Deposits of the American Cordillera

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 in the

(PDF) Distribution of gold in porphyry copper deposits

PDF | 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 .

Porphyry (geology) - Wikipedia

Collectively, these type of deposits are known as "porphyry copper deposits". Rhomb porphyry. Rhomb porphyry is a volcanic rock with gray-white large porphyritic rhomb-shaped phenocrysts embedded in a very fine-grained red-brown matrix. The composition of rhomb porphyry places it in the trachyte–latite classification of the QAPF diagram.

40Ar/39Ar GEOCHRONOLOGY OF THE EL TENIENTE PORPHYRY .

Keywords: Andes, porphyry copper deposits, 40Ar/39Ar geochronology, hydrothermal. Chile's El Teniente deposit is the largest known porphyry Cu-Mo orebody (>70 Mt Cu1), and is genetically related to Late Miocene–Early Pliocene igneous activity on the western slopes of the Andean Cordillera (cf. Howell and Molloy, 1960, Camus, 1975,

Porphyry copper deposit - Wikipedia

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 fluids may interact with the magmatic .

Porphyry - an overview | ScienceDirect Topics

The main mineral deposits of Papua New Guinea are porphyry copper–gold deposits, disseminated and vein gold deposits, and alluvial gold. Other less common deposits include lateritic nickel–cobalt ore over ultramafic rocks, minor manganese ore, and the small copper–gold massive sulphide orebodies that have been mined near Port Moresby.

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.

Porphyry copper deposit - IPFS is the Distributed Web

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 fluids may interact with the magmatic .

Porphyry Copper Deposits - mingeoch.uni-jena.de

Porphyry Copper Deposits This text is based mostly on the Economic Geology Notes by Ron Morton and the review of porphyry-copper deposits by Sillitoe (2010). The latter publication is exhaustive and is available through the ThULB in Jena. Definition: Porphyry copper deposits are large tonnage, low-to medium-grade deposits in which

Porphyry Copper Deposit Model - USGS

Sep 02, 2010 · This report contains a revised descriptive model of porphyry copper deposits (PCDs), the world's largest source (about 60 percent) and resource (about 65 percent) of copper and a major source of molybdenum, gold and silver.

What Makes for a Copper Porphyry Takeover Target

Major miners look to copper porphyry deposits for large-tonnage, low-cost operations. We take a look at what makes for a copper porphyry takeover target. Ask any economic geologist the most .

The 10 biggest copper mines in the world - Mining Technology

Nov 04, 2013 · Southern Copper Corporation (SCC), a subsidiary of Grupo Mexico, owns and operates the mine. Toquepala produced about 152,000t of copper in 2012, including 120,000t of copper concentrates and 32,000t of copper cathodes. Ore is extracted from the Toquepala porphyry copper deposit located in the southern-most Andes Mountains of Peru.

Porphyry Copper Deposits of the American Cordillera

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 in the

Porphyry | Definition of Porphyry by Merriam-Webster

Porphyry definition is - a rock consisting of feldspar crystals embedded in a compact dark red or purple groundmass. . porphyry. porphyry copper. porphyry shell. Porpita. Statistics for porphyry. Look-up Popularity. Time Traveler for porphyry. The first known use of porphyry was in the 15th century. See more words from the same century. More .

Porphyry (geology) - Wikipedia

Collectively, these type of deposits are known as "porphyry copper deposits". Rhomb porphyry. Rhomb porphyry is a volcanic rock with gray-white large porphyritic rhomb-shaped phenocrysts embedded in a very fine-grained red-brown matrix. The composition of rhomb porphyry places it in the trachyte–latite classification of the QAPF diagram.

Why No Porphyry Copper Deposits in Japan and South Korea .

Antonio Arribas and 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, 68, 2, (144-163), (2018).

Porphyry copper deposits: Strike-slip faulting and .

Porphyry copper deposits sometimes form during the solidification of stocks of relatively oxidized magma of intermediate composition. Most workers have assumed ore-forming systems have special chemical attributes, but none has been found that is useful to guide exploration efforts.

PORPHYRY DEPOSITS W.D. SINCLAIR Geological Survey of .

tion from a recognized porphyry deposit did not begin until 1955, from the Copper Mountain deposit at Mines Gaspé, Quebec. Copper production from porphyry deposits increased rapidly in the 1960s and early 1970s with the development of deposits in British Columbia such as Bethlehem and Lornex in the Highland Valley district,

HYPOGENE ALTERATION AND MINERALIZATION IN THE DOS .

Mexico. This region is richly endowed with porphyry Cu-(Mo) deposits, yet Dos Pobres, one of at least four porphyry deposits in the Safford district (Langton and Williams, 1982), represents one of the few porphyry Cu(-Au-Mo) deposits, a distinctive family of porphyry deposits that are commonly associated with relatively mafic intrusive rocks

Preliminary Model of Porphyry Copper Deposits - USGS

to many porphyry copper deposits (for example, Bingham, Utah), as well as crosscutting porphyry-style mineralization (for example, Valea Morii, Romania). Primary Commodities Copper is the primary commodity of economic interest in most porphyry copper deposits, although some deposits with low

Mineral deposit - Hydrothermal solution | Britannica

Porphyry deposits. Among the most distinctive hydrothermal deposits is a class known as porphyry copper deposits, so called because they are invariably associated with igneous intrusives that are porphyritic (meaning the rock is a mixture of coarse and fine mineral grains).Porphyry copper deposits (and their close relatives, porphyry molybdenum deposits) contain disseminated mineralization .

geochem.geos.vt.edu

semblages in individual porphyrv copper deposits Of southwest- ern North America as well as comparative characteristics of such deposits as a group (see. for example. compilations by Porphyry copper deposits contain large volumes of rock which have undergone alteration as the result Of circulation of hydrothermal fluids.

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