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Showing 1 to 9 of 9 for “"chalcophile elements"”.
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Magmatic and volcanic processing of volatile and chalcophile elements
Chalcophile elements possess significant economic and environmental value. The transition to an electric economy has led to an unprecedented rise in the demand for critical metals, including several chalcophile elements such as copper, selenium, and silver. Copper in particular is essential – it is …
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Mantle and crustal controls on the distribution of chalcophile elements in silicate melts
In silicate melts, sulfur-loving chalcophile and siderophile elements (collectively termed CSE) are an important suite of elements both in terms of their economic importance (e.g., porphyry Cu deposits) and use as petrogenetic tracers. During the formation and evolution of basaltic melts, the fate …
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Platinum Group Element Mineralization in "Ballrooms" of the J-M Reef of the Stillwater Complex, Montana
… correlation with one another and the other major elements but do not correlate with Cu, Ni, and S. This indicates that Cu, Ni, and S were controlled by processes other than those controlling the distribution of the major elements in cumulus phases.</p> <p>Cl-rich hydrous phases in the ballrooms …
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Iron-Nickel-Sulfur-Carbon System Under High Pressure, With Implications To Earth’S Mantle
… phases preferentially store siderophile and chalcophile elements (and potentially noble gases). Physically, Fe-Ni-S-C phases have distinctly higher densities, surface tensions, and electrical conductivities, and lower melting points than mantle silicates. Understanding the geochemical and …
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Microchemical phase characterization of petroleum coke gasification slags
… Mg, Si and AI. This larger number of important elements causes petroleum combustion slags to have more complex phase assemblages. The high vanadium contents of petroleum-based combustion feedstocks yield numerous crystalline V -oxides with stoichiometric amounts of Ca, Fe, Mg, AI, Ni andlor Na …
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Microanalytical Constraints on the Geometry and Chemical Evolution of Kīlauea’s Volcanic Plumbing System
… advances in LA-ICP-MS, permitting analyses of chalcophile elements within melt inclusions and matrix glasses. This dataset provides new constraints on the behaviour of these poorly-understood elements during mantle melting, crustal storage and fractionation, and low pressure degassing. Chapter …
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Hydrothermal plumes and processes in Indian Ocean
… their impact on the global geochemical cycles of elements is to be assessed. One of the most important processes that has been demonstrated to modify the gross chemical flux from venting to the oceans is the oxidative precipitation of dissolved Fe (II). It has been hypothesised that this might …
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Geochemical fractionation during melting of sulfide and sulfate bearing mantle lithologies
… phases in deep mantle being the primary host of chalcophile and Highly Siderophile Elements (HSEs) plays an important role in economic mineral deposits of these elements. In spite of having huge significance in planet scale geochemistry, S cycling at subduction zones and deep Earth and how …
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Mineralogy and geochemistry of the carbonaceous mudstones and coal petrogenesis of the Grootgeluk formation in the Waterberg coalfield, South Africa
… concentrations of the alkali and alkaline-earth elements suggesting that the rocks had undergone very high degrees of chemical alteration. Trace elements in the carbonaceous mudstones are predominantly hosted in the mineral fraction. The carbo-tonstein had anomalously high concentrations of all …