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Porphyry copper deposits are rare compared to ubiquitous, barren, silicic upper crustal intrusions that can occur even within the same magmatic district, suggesting that unique circumstances related to the evolution of the magmatic system are required to form economic ore deposits (Sillitoe 1997, Rohrlach et al., 2005, Sillitoe and Perello 2005, Audetat et al., 2008; .
bodies are very large, generally containing from 100 million to several billion tons of copper ore with a copper content of % to %. The majority of porphyry copper deposits occur adjacent to subduction zones ( Ring of Fire around the Pacific Ocean), which form along continental margins ( Andes Mountains) and island
Copper is not the only metal that occurs in porphyry deposits. There are also porphyry ore deposits mined primarily for molybdenum, many of which contain very little copper. Examples of porphyry molybdenum deposits are the Climax, Urad, and Henderson deposits in central Colorado, and the Questa deposit in northern New Mexico.
· Porphyry deposits are large, lowgrade metal ore bodies that are formed from hydrothermal fluids derived from an underlying magma reservoir. They are important as major sources of critical metals ...
Descriptions of major ore deposits world wide. The Resolution project deposit in the Superior (Pioneer) district is loed in eastcentral Arizona, USA. It lies within a prominent ENE trending belt of porphyry copper deposits, mantos and copperbearing veins that extends over a distance of 50 km from the Old Dominion mine to the northeast, to the Magma mine in the .
Over 150 ore deposits, ore occurrences and mineral manifestations have been established in the Panagyurishte ore district. It is characterized mainly by porphyry copper and massive sulfide copper deposits. Small goldore, goldpolymetallic, barite, leadzinc and manganese deposits and ore occurrences are also encountered.
The Phu Kham CuAu deposit Porphyryrelated skarntype mineralization, Lao PDR is hosted by complexly deformed, schistose, quartzsericitepyrite altered PermoCarboniferous volcanic, volcaniclastic and intrusive rocks. These rocks occupy the immediate hanging wall of a large NEdipping thrust fault. Unmineralized, variably deformed red beds of the Mesozoic Khorat basin .
Over 150 ore deposits, ore occurrences and mineral manifestations have been established in the Panagyurishte ore district. It is characterized mainly by porphyry copper and massive sulfide copper deposits. Small goldore, goldpolymetallic, barite, leadzinc and manganese deposits and ore occurrences are also encountered.
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 .
· Porphyry copper deposits are copper ore bodies that are formed from hydrothermal fluids that originate from a voluminous magma chamber several kilometers below the deposit itself. In later stages, circulating meteoric fluids may interact with the magmatic fluids.
· Porphyry copper deposits are typically verylow grade with between 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 lowcost mining setting.
Pintea I. (1993) Microthermometry of the hydrosaline melt inclusions from copper porphyry ore deposits Apuseni Mountains, Romania. Arch. Mineral. XLIX, p. 165167, Warsaw, Poland.
Pintea I. (1993) Microthermometry of the hydrosaline melt inclusions from copper porphyry ore deposits Apuseni Mountains, Romania. Arch. Mineral. XLIX, p. 165167, Warsaw, Poland.
· Porphyrytype deposits provide most of the world''s copper and molybdenum, as well as large amounts of gold and other metals. They originally form several kilometres below the earth''s surface above large magma chambers. Not only are they rare, but most large nearsurface examples have already been found. In Carter''s view and that of his co ...
Descriptions of major ore deposits world wide. The Mines Gaspé Copper Mountain porphyryskarn and Needle Mountain skarn/manto coppermolybdenum deposits are loed within the Chick Chock Mountains in the north central part of the Gaspé Peninsula, Quebec, Canada, within the municipality of Murdochville and 75 km WNW of the coastal town of Gaspé (#Loion: 48° .
· Porphyry ore deposits are known to be associated with arc magmatism on the overriding plate at subduction zones. While general mechanisms for driving magmatism are well established, specific subductionrelated parameters linking episodes of ore deposit formation to specific tectonic environments have only been qualitatively inferred and have not been .
W. J. McMillan Geological Division, Ministry of Energy, Mines and Petroleum Resources, Victoria, British Columbia
Porphyry deposits represent an important resource of copper; however, they are also important sources of gold and molybdenum with porphyry deposits being the dominant source of the latter. [6] In general, porphyry deposits are characterized by low grades of ore mineralization, a porphyritic intrusive complex that is surrounded by a vein stockwork and hydrothermal .
Pintea I. (1993) Microthermometry of the hydrosaline melt inclusions from copper porphyry ore deposits Apuseni Mountains, Romania. Arch. Mineral. XLIX, p. 165167, Warsaw, Poland.
· The mineralization of copper in porphyry ore deposits is associated with the formation of certain alteration minerals (Lowell and Guilbert, 1970, Pirajno, 1992, Sillitoe, 2010). These alteration minerals are often SWIRactive minerals ( Sabins, 1999, Thompson et al., 1999, Dalm et al., 2014 ).
· Porphyry copper deposits are copper ore bodies that are formed from hydrothermal fluids that originate from a voluminous magma chamber several kilometers below the deposit itself. In later stages, circulating meteoric fluids may interact with the magmatic fluids.
These intrusive episodes have associated ore deposits of differing styles, including alkalic to shoshonitic porphyry CuAu deposits at Cadia (456 to 454 and 438 Ma), Kaiser and Northparkes (episodic activity from 484 to 439 Ma); alkalic epithermal AuZn at Cowal (~439 Ma K diorite to quartz monzonites); calcalkaline porphyry CuAu mineralisation at Copper Hill (~450 Ma), .
The database of known deposits and significant prospects includes an inventory of mineral resources in 89 known porphyry copper (and 2 related copperbearing polymetallic vein) ore zones, representing 50 porphyry copper deposits, and lists key characteristics of 280 additional porphyry copper and related copperbearing prospects, as indied by currently available .
· Porphyry copper deposits are copper ore bodies that are formed from hydrothermal fluids that originate from a voluminous magma chamber several kilometers below the deposit itself. In later stages, circulating meteoric fluids may interact with the magmatic fluids.
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