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EconomicGeology VoL 68, 1973, pp. 799-815 The TopsandBottomsof PorphyryCopperDeposits RICHARD H. SILLITOE Abstract Although it is now widely acceptedthat porphyry copperdepositsconsistof zonally arranged shells of alteration and mineralization centered on high-level, calc-alkaline stocks,the nature of their uneconomicupward and downward extensionsremains undocumented.
Richard H Sillitoe, 2005. "Supergene Oxidized and Enriched Porphyry Copper and Related Deposits", One Hundredth Anniversary Volume ... Porphyry Cu deposits pass through a natural supergene cycle in which leaching and mature enrichment in advanced argillic and sericitic zones give way during eventual exposure of deeper potassic zones to in situ ...
1 de ene. de 2022 · 1. Introduction. Porphyry–skarn deposits are an important source of Cu and contribute 70% to global Cu production (Sillitoe, 2010).Numerous porphyry–skarn Cu deposits are associated with Cenozoic subduction-related magmatisms, particularly in continental arcs along the eastern Pacific margin (e.g., Cooke et al., 2005, Richards, 2003) and island arcs in the western Pacific (e.g., Cooke et ...
1 de ene. de 2005 · At regional scale, active deep intra-arc fault systems determine the geometry of porphyry Cu systems (Sillitoe and Perelló, 2005) whereas intersections between arc-parallel structures and ...
1 de ene. de 2012 · Andreas Audétat, Adam C. Simon, 2012. "Magmatic Controls on Porphyry Copper Genesis", Geology and Genesis of Major Copper Deposits and Districts of the World: A Tribute to Richard H. Sillitoe, Jeffrey W. Hedenquist, Michael Harris, Francisco Camus
Este documento resume los sistemas de pórfidos cupríferos, que alojan algunos de los tipos de mineralización más ampliamente distribuidos en los límites de placa convergente. Los sistemas se forman a partir de la inyección de magma rico en metales desde plutones subyacentes y generan una secuencia de alteración y mineralización zonada debido al enfriamiento de fluidos. Los sistemas ...
11 de dic. de 2020 · Porphyry Cu-Au systems (Hedenquist and Lowenstern 1994; Sillitoe 2010) are magmatic-hydrothermal ore systems that commonly include two spatially associated and genetically linked styles of Cu-Au ore.Porphyry-style mineralization holds the bulk of the economic ore in large-tonnage but relatively low-grade orebodies dominated by chalcopyrite ± bornite in and around stockwork veinlets.
