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Porphyry Copper Gold Deposits Porphyry Cu Mo Deposits Tectonic Setting Porphyry copper deposits are typically formed in a continental arc and island arc settings along the Pacific Ring of Fire the west coast of North and South America to the Eastern portions of Asia PORPHYRY MODEL Porphyry Cu Systems Granitic cupola at 3 10 km depth Hydrothermal alteration ores at 1 to >6 km depth
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Quellaveco deposit not yet being mined in the Peruvian Andes The white markers in the landscape mark the extent of the copper mineralisation at surface Every person in the UK uses around 8kg of copper per year Worldwide usage exceeds 24 million tonnes annually and whilst around 41% of European copper needs are met by recycling the
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Porphyry Cu and porphyry Mo deposits are large to giant deposits ranging up to >20 and Gt of ore respectively that supply about 60 and 95% of the world s copper and molybdenum as well as significant amounts of gold and silver
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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
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Porphyry copper deposits are copper orebodies which are associated with porphyritic intrusive rocks The ore occurs as disseminations along hairline fractures as well as within larger veins which often form a stockwork The orebodies typically contain between and 1 % copper with smaller amounts of other metals such as molybdenum silver
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Porphyry Cu deposits in China contain a total resource of ∼47 million tonnes Mt Cu at average grades ranging mostly from to % Cu most <% Cu accounting for 42% of China s Cu reserves In terms of contained Cu 14 Cu rich porphyry deposits are classified as giant ≥ Mt Cu and 38 are classified as intermediate ≥ Mt Cu
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The Gangdese porphyry copper deposit belt GPCDB is along the southern margin of Lhasa Terrane The deposits of GPCDB were formed in the Miocene after the India Eurasia collision The genesis
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Such a hydrothermal origin is corroborated when the sum of the REE is plotted against Co Ni Cu with the resulting data points clustering in the hydrothermal deposits for metalliferous ocean bottom sediments The carbon isotope compositions of the carbonate containing iron formations range from δ13C of to which coincides with a range of values for other Proterozoic iron
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Mar 16 2022Porphyry type 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
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publicly traded Porphyry Copper Deposit companies Find the best Porphyry Copper Deposit Stocks to buy 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
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The Copper Flat porphyry is dated at 75 Ma McLemore et al 1999 2000b Approximately 7 million pounds of copper was produced in 1982 prior to closure of the mine Reserves are estimated at million tons of ore at grades of % Cu oz/ton Au oz/ton Ag and % Mo Alta Gold Co Form 10K December 13 1997
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This belt hosts several other porphyry copper deposits in Ecuador such as Mirador 438 million tonnes measured and indicated at % Cu and 235 million tonnes inferred at % Cu 3
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Porphyry copper deposits are currently the largest source of copper ore Although they are low grade the deposits constitute important sources because they may be worked on a large scale at low cost Geologically the deposits occur close to or in granitic intrusive rocks that are porphyritic in texture
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The target copper molybdenum porphyry deposits are hosted in Cretaceous volcanic and sedimentary rocks that are overlain by an extensive cover of Quaternary and Miocene sediments at Avispa The
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The Escondida porphyry copper deposit and its satellites are the source of ore for the world s current largest copper mine with an installed capacity of Mt of fine copper per annum The published ore reserve mineral resource at Escondida and the satellite Escondida Norte deposits at the end of 2024 totalled Gt % Cu or
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Yulong Deposit Eastern Tibet A High Sulfidation Cu Au Porphyry Copper Deposit in the Eastern Indo Asian Collision Zone HOU ZENGQIAN 1 Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 People s Republic of China XIE YULING Beijing University of Science and Technology Beijing 100082 People s Republic of China XU WENYI LI YINQING Institute of Mineral
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5 days agoThe target copper molybdenum porphyry deposits are hosted in Cretaceous volcanic and sedimentary rocks that are overlain by an extensive cover of Quaternary and Miocene sediments at Avispa The
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A deposit in which minerals of copper molybdenum gold or less commonly tungsten and tin are disseminated or occur in a stockwork of small veinlets within a large mass of hydrothermally altered igneous rock The host rock is commonly an intrusive porphyry but other rocks intruded by a porphyry can also be hosts for ore minerals ii
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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 hosted Au deposits in increasingly peripheral locations and superjacent high and intermediate sulfidation epithermal deposits
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Porphyry copper deposits commonly contain hundreds of millions of metric tons of ore that averages a fraction of 1 percent copper by weight although they are low‐grade The major products from porphyry copper deposits are copper and molybdenumor copper and gold
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The term porphyry copper now includes engineering as well as geological considerations It refers to large relatively low grade epigenetic intrusion related deposits that can be mined using mass mining techniques Geologically the deposits occur close to or in granitic intrusive rocks that are porphyritic in texture
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45 km 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
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Whole rock assay data for the El Teniente Skouries and Muratdere porphyry Cu deposits Samples were selected for analysis from boreholes in the Muratdere Cu Au Mo porphyry deposit Western Turkey and the Skouries Cu Au porphyry deposit Greece and samples from the El Teniente Cu Mo porphyry deposit were selected from the Natural History Museum London s ore collection
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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 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
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Porphyry copper deposits are generally composed of a plug like igneous intrusion a large magma body that is emplaced beneath a volcanic system On average these deposits can have a vertical
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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 Porphyry copper deposit As a Guggenheim engineer he was the first to apply scientific methods to sampling bulk tonnage orebodies at the enormous porphyry copper deposit at Bingham Canyon Utah
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Porphyry copper deposits are typically very low 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 low cost mining setting
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Although copper has been mined from a number of different types of mineral deposits porphyry copper deposits are the most important source for copper accounting for more than 60 percent of the annual world copper production and approximately 65 percent of the known total copper resource Since 1970 more than 95 percent of the U S copper
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Deposit Tongkuangyu China Porphyry copper molybdenum deposits Goonumbla Endeavour 26 Australia Brenda British Columbia ProductionlResewes 380 Mt % Cu Highmont British Columbia Comments/References Reserves mine staff pers comm 1988 166 Mt % Cu glt Au glt Ag Berg British Columbia Possible reserves Jones 1985
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