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SPECIAL COLLECTION FROM MAGMAS TO ORE DEPOSITS Sulfide silicate textures in magmatic Ni Cu PGE sulfide ore deposits Disseminated and net textured ores Stephen J BarneS1 JameS e mungall2 margaux le Vaillant1 Belinda godel1 C miChael leSher3 daVid holwell4 peter C lightfoot5 † nadya KriVolutSKaya6 and Bo wei7
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Magmatic Fe Ni Cu ± platinum group element PGE sulfide deposits form when mantle derived mafic and ultramafic magmas become saturated in sulfide and segregate immiscible sulfide liquid commonly following interaction with crustal rocks
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SPECIAL COLLECTION FROM MAGMAS TO ORE DEPOSITS Sulfide silicate textures in magmatic Ni Cu PGE sulfide ore deposits Disseminated and net textured ores Stephen J BarneS1 JameS e mungall2 margaux le Vaillant1 Belinda godel1 C miChael leSher3 daVid holwell4 peter C lightfoot5 † nadya KriVolutSKaya6 and Bo wei7
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Magmatic Ni Cu ore bodies at Nunavik Nickel like most similar deposits are mainly composed of pyrrhotite Fe 1 x S and varying amounts of chalcopyrite CuFeS 2 and pentlandite Fe Ni 9 S 8 From a geophysical point of view these minerals are indistinguishable and their global signatures will mostly depend on their texture disseminated net textured semi massive in veins or
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1/01/2005· Magmatic Fe Ni Cu ± platinum group element PGE sulfide deposits form when mantle derived mafic and ultramafic magmas become saturated in sulfide and segregate immiscible sulfide liquid commonly following interaction with crustal rocks
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Co Genetic Magmatic Cr and Ni Cu PGE Deposits in the Ring of Fire Houlé GSC Q Lesher MERC LU and Metsaranta OGS Magmatic Cr and Ni Cu PGE deposits are both often associated with ultramafic to mafic magmas but a close association of significant Cr and Ni Cu PGE deposits within the same magmatic system is rare
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Magmatic Ni Cu ore bodies at Nunavik Nickel like most similar deposits are mainly composed of pyrrhotite Fe 1 x S and varying amounts of chalcopyrite CuFeS 2 and pentlandite Fe Ni 9 S 8 From a geophysical point of view these minerals are indistinguishable and their global signatures will mostly depend on their texture disseminated net textured semi massive in veins or
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Magmatic nicupge sulphide deposits are formed by the segregation and accumulation of immiscible sulphide liquid from mafic or ultramafic mineral system approach considers the origin of these deposits in the framework of lithospheric scale processes from the time honoured perspective of source fluids transport and traps
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View Notes Lecture 18 Magmatic Ni Cu PGE deposits 2015 from GEOLOGY GEOL 2017 at Laurentian University Outline Magmatic Ni Cu PGE Ore Deposits Important Processes in Deposit
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Magmatic Ni Cu PGE Mineralization in Phanerozoic deposits Wellgreen Turnagain Giant Mascot are generally small and most are subeconomic SGS Open House Dec 2015 Lesher Houlé consistent with magmas derived from from peridotitic normal asthenospheric mantle
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Most magmatic Ni Cu PGE sulphide deposits occur within long lived magma pathways fed by high degree partial melts of the mantle Holistic mineral system analysis for such deposits has some parallels with dominantly hydrothermal systems but also some important differences Major provinces are associated with large volumes of magma erupted at
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We have compiled the trace element concentrations in pyrrhotite pentlandite chalcopyrite and pyrite from magmatic Ni Cu PGE ore deposits with the aim of understanding their petrogenesis and whether these minerals can be used as indicator minerals Among the samples there are some of the most studied world class Ni Cu Aguablanca Duluth Jinchuan Noril sk Talnakh Kharaelakh Sudbury
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Processes and Ore Deposits of Ultramafic Mafic Magmatic ores form from ultramafic mafic magmas and crystallize at high temperature after emplacement into crustal magma chambers and are genetically linked to the evolution of the parental magmas through space and time
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Magmatic Ni Cu PGE Mineralization in Phanerozoic deposits Wellgreen Turnagain Giant Mascot are generally small and most are subeconomic SGS Open House Dec 2015 Lesher Houlé consistent with magmas derived from from peridotitic normal asthenospheric mantle
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The deposit style is similar to the deposits of the equally well endowed Circum Superior Raglan Lesher 2007 and Thompson Belts of similar age Layton Matthews et al 2011 Scoates et al 2017 although the trace element characteristics of the magmas are greatly different
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1/01/2012· For example development of major porphyry copper deposits/districts is favored by the presence of clustered alteration mineralization centers mafic or massive carbonate host rocks voluminous magmatic hydrothermal breccias low sulfidation state core zones conducive to copper deposition as bornite ± digenite hypogene and supergene sulfide enrichment and mineralized skarn
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It is concluded that the high degree of partial melting magma with high Mg content in mantle is crucial to gather the huge amounts of Ni and PGE from mantle sulfide and olivine into ore forming magma and the sulfide segregation will form super large scale Ni PGE sulfide deposits in a large scale layered or conduit intrusion
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The Jinchuan Ni Cu PGE deposit is the single largest magmatic Ni sulfide deposit in the world with three different hypotheses on its ore forming processes in situ sulfide segregation of sulfide bearing magma deep segregation with multiple injections of magma and hydrothermal superimposition mainly based on study of whole rock geochemistry and isotopes S Sr Nd Hf
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CiteSeerX Document Details Isaac Councill Lee Giles Pradeep Teregowda Magmatic Fe Ni Cu ± platinum group element PGE sulfide deposits form when mantle derived mafic and ultramafic magmas become saturated in sulfide and segregate immiscible sulfide liquid commonly following interaction with crustal rocks Although the metal contents of primary magmas influence ore
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Magmatic Ni Cu ore bodies at Nunavik Nickel like most similar deposits are mainly composed of pyrrhotite Fe 1 x S and varying amounts of chalcopyrite CuFeS 2 and pentlandite Fe Ni 9 S 8 From a geophysical point of view these minerals are indistinguishable and their global signatures will mostly depend on their texture disseminated net textured semi massive in veins or
Get Price
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