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Porphyry copper deposit mineralogy Britannica
2018. 11. 19. 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
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Understanding how porphyry-type copper deposits are
2021. 3. 21. In a paper published in the journal Communications Earth & Environment, the scientists explain that porphyry copper deposits develop several
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Porphyry copper deposits of the world USGS
Porphyry copper deposits of the world 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 locations of these deposits to be plotted using GIS.
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USGS Scientific Investigations Report 2010-5070-B:
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. Despite relatively low grades (average 0.44 percent copper
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(PDF) The formation of porphyry copper deposits
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
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Prospectivity Mapping for Porphyry Copper Deposits Using
No Cretaceous porphyry copper deposits are known within the study area (App. Table A1), and most of the Cretaceous magmatism in the southwestern U.S. lies in batholithic belts to the west of the study that are deeply eroded and lack coeval volcanic rocks and, therefore, are unlikely to preserve any porphyry deposits that may have been associated.
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Copper Porphyry Districts Chile & Associates Samso
Economic Geology, v. 100), more than half of the 25 largest known porphyry copper deposits, defined in terms of contained copper metal, formed during three time periods: the Paleocene to Eocene, Eocene to Oligocene, and middle Miocene to Pliocene.
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Gold endowments of porphyry deposits controlled by
2020. 1. 14. 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.
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(PDF) Geochemistry of Porphyry Deposits ResearchGate
copper-and gold-rich porphyry deposits are known or inferred to be associated with regions where low-angle subduction of aseismic ridges, seamount chains, or oceanic plateaus was
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