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Showing 1 to 8 of 8 for “"Porphyry systems"”.
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Trace Elements and Sulfur Isotope Variations in Endowed and Non-Endowed Porphyry Systems of the Dawson Range Mineral Belt, Yukon Territory
… The study analyzed fifty-six samples from eight porphyry systems, classifying them into endowed deposits (Casino, Cash, Revenue, Carmacks, and Minto) and non-endowed occurrences (Kerr, Cyprus, and Cockfield). Trace element analysis shows that endowed zones have higher concentrations of Cu, Mo, …
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Architecture of the Silurian sedimentary cover sequence in the Cadia porphyry Au-Cu district, NSW, Australia : implications for post-mineral deformation
Alkalic porphyry style Au-Cu deposits of the Cadia district are associated with Late-Ordovician monzonite intrusions, which were emplaced during the final phase of Macquarie Arc magmatism at the end of the Benambran Orogeny. N-striking faults, including the curviplanar, northerly striking, …
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Fluid Inclusion Characteristics in Magmatic-Hydrothermal Ore Deposits
… of fluid inclusions formed in associated with porphyry copper mineralization has been predicted using a computer model. A simple geologic model of an epizonal intrusion was developed based on a Burnham-style model for porphyry systems and thermal models of the evolution of epizonal intrusions. …
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Magmatic evolution of the southern Centinela district, northern Chile: insights from PGE geochemistry and zircon fertility tools
… three quarters of this metal is sourced from porphyry copper deposits. For this reason, is important to understand the processes that control their formation. Recent studies have shown that the platinum group elements (PGE) are sensitive indicators of sulphide saturation in evolving magma …
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Magmatic evolution of the southern Centinela district, northern Chile: insights from PGE geochemistry and zircon fertility tools
… three quarters of this metal is sourced from porphyry copper deposits. For this reason, is important to understand the processes that control their formation. Recent studies have shown that the platinum group elements (PGE) are sensitive indicators of sulphide saturation in evolving magma …
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Geochemical Evolution at White Island, New Zealand
… of the environment associated with formation of porphyry copper deposits. White Island has only been active for about 10 Ka and, as such, is thought to be an ideal location to study early magmatic processes associated with formation of porphyry copper deposits. In this study, the geochemistry of …
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The igneous petrology, thermal history, and genesis of sedimentary rock-hosted Au deposits in the northern Battle Mountain mining district, Nevada
… of magmatic-hydrothermal origin, including porphyry, skarn, and distal disseminated deposits, as well as sedimentary-rock hosted Au deposits of uncertain origin. This dissertation examines the ages of magmatism and mineralization in the Battle Mountain mining district, the characteristics of …
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Gold and Base Metal Mineralization, Hydrothermal Alteration and Vein Paragenesis in the Spring Valley Deposit, Pershing County, Nevada
… is primarily hosted within the Feldspar Porphyry, Agglomerate, Welded Tuff, Volcaniclastic Siltstone and Quartz-eye Rhyolite units of the Rochester Formation and in lithic tuffs and greenstones of the Limerick Formation. It occurs in a series of crosscutting quartz-carbonate ± pyrite ± …