Nov 04, 2013 · The porphyry copper deposit was discovered in 1952 and has been operational since 1998. It is the first mine to be developed entirely by the stateowned Codelco and produced 427,791t of copper and molybdenum in 2012. Construction work for the Radomiro Tomic Copper Sulphide Mine – Phase I was completed in June 2010 with an investment of $370m.
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(AuMo) deposits, a distinctive family of porphyry deposits that are commonly associated with relatively mafic intrusive rocks
Examples of porphyry molybdenum deposits are the Climax, Urad, and Henderson deposits in central Colorado, and the Questa deposit in northern New Mexico. The US Geological Survey has classed the Chorolque and Catavi tin deposits in Bolivia as porphyry tin deposits. Some porphyry copper deposits in oceanic crust environments, such as those in
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
Porphyry copper deposit density is inversely related to the exposed area of permissive rock. The linear regression line and confidence limits constructed with the 19 control areas can be used to estimate the number of undiscovered deposits, given the size of a permissive area.
The foundation of mineral deposit models is information about known deposits—the purpose of this publiion is to make this kind of information available in digital form for a group of porphyry copper deposits. This publiion contains a computer file of information on porphyry copper deposits around the
Porphyry copper deposits sometimes form during the solidifiion of stocks of relatively oxidized magma of intermediate composition. Most workers have assumed oreforming systems have special chemical attributes, but none has been found that is useful to guide exploration efforts.
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 systems supply most copper and significant gold to our economy. Recent studies indie that they are frequently associated with high Sr/Y magmatic rocks, but the meaning of this association remains elusive. Understanding the association between high Sr/Y magmatic rocks and porphyry
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, intrusionrelated deposits
Mar 11, 2015 · 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 gold comes from this deposit type. Porphyries are most commonly found along
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
Porphyry deposits are one of the most important sources of copper and molybdenum, and are also major sources of silver, gold, and tin.In addition, porphyry deposits may host valuable byproducts
Major miners look to copper porphyry deposits for largetonnage, lowcost operations. We take a look at what makes for a copper porphyry takeover target. Ask any economic geologist the most
Porphyry copper deposits commonly yield molybdenum and silver as coproducts, were. The intrusive activity responsible for Arizona''s porphyry copper deposits occurred about 70 million years ago, in the Earth''s crust deep below the ground surface. The rich metal deposits were subsequently exposed millions of years later by faulting and erosion.
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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
PDF Analysis of 55 porphyry copper deposits demonstrates a continuum between porphyry coppergold deposits emplaced at a median depth of 1 km, with a median size of 160 million metric tons of
to many porphyry copper deposits (for example, Bingham, Utah), as well as crosscutting porphyrystyle 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
Gold abundances in porphyry copper deposits vary greatly, compliing efforts to define goldrich 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 goldrich deposits were found largely in island arc regions (Kesler, 1973).
PDF 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
May 31, 2015 · Development of a Copper Porphyry Porphyry copper deposits are copper orebodies that are formed from hydrothermal fluids that originate from a voluminous magma chamber several kilometers below the
Collectively, these type of deposits are known as "porphyry copper deposits". Rhomb porphyry. Rhomb porphyry is a volcanic rock with graywhite large porphyritic rhombshaped phenocrysts embedded in a very finegrained redbrown matrix. The composition of rhomb porphyry places it in the trachyte–latite classifiion of the QAPF diagram.
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.
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.
About Us Read More About Libero Copper. Libero Copper is acquiring highquality copper deposits with significant resources but without any fatal flaws or significant holding costs and exceptional copper exploration properties in the Americas.
Porphyry copper deposits (and their close relatives, porphyry molybdenum deposits) contain disseminated mineralization, meaning that a large volume of shattered rock contains a ramifying network of tiny quartz veins, spaced only a few centimetres apart, in which grains of the copper ore minerals chalcopyrite and bornite (or the molybdenum ore
Anonymous, 1994b, Cyprus acquires Cerro Verde mine: The Northern Miner, v. 80, no. 6, April 11, p. 3.
The Bristol PCD project is a collaboration between the University of Bristol and the global mining company, BHP.. Our objective is to modify existing porphyry copper deposit (PCD) models in the light of recent advances in geological research through 5 key questions:
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
Jul 12, 2019 · Liberty Gold Announces Signing of Definitive Agreement to Sell the Halilağa Porphyry Copper Gold Deposit in Turkey Liberty Gold Announces Signing of Definitive Agreement to Sell the Halilağa Porphyry Copper Gold Deposit in Turkey Details 12 July 2019 VANCOUVER, B.C. – Liberty Gold Corp. (LGDTSX) ("Liberty Gold" or the "Company") is
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