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Porphyry and Related Deposits of Northern Eurasia
Geology of Ore Deposits, 2023It is hard to overestimate the economic importance of the ore deposits of the “porphyry family” and related ones, in particular, epithermal, in the modern world. These deposits are represented by industrial concentrations of a wide range of metals, mainly copper, gold, molybdenum, tin, etc.
I. V. Vikentyev, N. S. Bortnikov
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2005
Abstract Porphyry deposits arguably represent the most economically important class of nonferrous metallic mineral resources. These magmatic-hydrothermal deposits are characterized by sulfide and oxide ore minerals in vein-lets and disseminations in large volumes of hydrothermally altered rock (up to 4 km3).
Eric Seedorff +7 more
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Abstract Porphyry deposits arguably represent the most economically important class of nonferrous metallic mineral resources. These magmatic-hydrothermal deposits are characterized by sulfide and oxide ore minerals in vein-lets and disseminations in large volumes of hydrothermally altered rock (up to 4 km3).
Eric Seedorff +7 more
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Porphyry-Cu Deposits of Turkey
2019Turkey, located within the western Tethyan-Eurasian Belt contains numerous porphyry copper deposits formed by the subduction, collision and post-collisional events during the closure of NeoTethys Ocean between the latest Cretaceous and late Miocene. These porphyry systems and associated epithermal and skarn deposits are associated with the subduction ...
Kuşcu, İlkay +2 more
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Geological Society, London, Special Publications, 1977
Summary Porphyry copper deposits are large crustal sulphur anomalies containing copper and other metals. Much of the sulphur is oxidized and, along with a major portion of the copper, deposited from fluids evolved from certain calc-alkaline melts of intermediate composition.
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Summary Porphyry copper deposits are large crustal sulphur anomalies containing copper and other metals. Much of the sulphur is oxidized and, along with a major portion of the copper, deposited from fluids evolved from certain calc-alkaline melts of intermediate composition.
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Origin of phenocrysts in mineralized porphyries of porphyry copper deposits
2005The genetic mechanism of phenocrysts in mineralized porphyries of the Yulong porphyry copper deposit, Tibet, China, has been studied in the context of fluid inclusions in quartz and K-feldspar phenocrysts, phenocryst textures and mineral crystal textures.
Wenming Chen, Jifu Sheng
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The michiquillay porphyry copper deposit
Mineralium Deposita, 1974Michiquillay is a mineralized intrusive quartz monzonite porphyry displaying typical porphyry copper alteration zones as found in metallized intrusives of that composition. From the interior outward these are the phyllic, argillic and propylitic zones. The potassic zone is not exposed at the surface.
V.F. Hollister, E.B. Sirvas
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Porphyry Copper Deposit Density
Economic Geology, 2005Estimating numbers of undiscovered mineral deposits has been a source of unease among economic geologists yet is a fundamental task in considering future supplies of resources. Estimates can be based on frequencies of deposits per unit of permissive area in control areas around the world in the same way that grade and tonnage frequencies are models of ...
D. A. Singer +3 more
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Porphyry tin deposits in Bolivia
Economic Geology, 1975Tin production from the central and southern parts of the Bolivian tin province has been derived largely from lode systems associated with high-level, late Tertiary stocks of intermediate composition. This paper proposes that several of these stocks, including those at the major Llallagua, Potosi, Oruro, and Chorolque mineralized centers, geological ...
R. H. Sillitoe, C. Halls, J. N. Grant
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The formation of porphyry copper deposits
Acta Geochimica, 2016Copper 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 are usually oxidized (with oxygen fugacities > ΔFMQ +2) (Mungall 2002; Sun et al. 2015).
Weidong Sun +8 more
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Porphyry–copper deposits of Bulgaria
International Geology Review, 1983(1983). Porphyry–copper deposits of Bulgaria. International Geology Review: Vol. 25, No. 2, pp. 178-188.
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