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Showing 1 to 20 of 32 for “"platinum group elements"”.
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Platinum-group elements geochemistry of felsic rocks
The mechanisms by which the platinum group elements (PGE) concentrate and fractionate during magmatic processes, especially in felsic magmatic systems, is poorly understood. The felsic igneous rocks are often linked to hydrothermal Cu-Au mineralization and the presence or absence of sulfide …
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Platinum-group elements geochemistry of felsic rocks
The mechanisms by which the platinum group elements (PGE) concentrate and fractionate during magmatic processes, especially in felsic magmatic systems, is poorly understood. The felsic igneous rocks are often linked to hydrothermal Cu-Au mineralization and the presence or absence of sulfide …
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Sorption of the platinum-group elements in selected solid matrices
Recent research on the platinum-group elements (PGE) has shown increased concentrations in environmental samples, probably as a result of the widespread use of PGE (Pt, Pd and Rh in particular) as catalysts in the chemical and car industry. Most of the recent research on PGE focuses on the analysis …
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Accumulation of Platinum Group Elements by the Marine Microalga, Chlorella stigmatophora
… marine biogeochemistry of Rh, Pd and Pt, or the platinum group elements (PGE), an emerging group of contaminants whose principal emissions are associated with the abrasion of the catalytic converter in motor vehicles and chemotherapy drugs discharged in hospital wastes. In this study, Rh(III), …
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Platinum-group elements in the ultrabasic rocks of the Braganca and Morais massifs, northern Portugal
… acted to fractionate the associated Platinum-Group Element (PGE) assemblage. Os, Ir and Ru were incorporated as laurite and irarsite minerals during chromite grain crystallisation, and are located in textural positions from the centres to the margins of the chromite grains. In …
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Aspects of the determination of the platinum group elements and arsenic by inductively coupled plasma mass spectrometry
Please read the abstract in the section 00front of this document
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Distribution of Platinum Group Elements in the New Afton Alkalic Cu-Au Porphyry Deposit, Kamloops, British Columbia
… contain potentially economic concentrations of platinum group elements (PGE). Primary PGE (Pd ± Pt) enrichment occurs within the main Cu-Au ore body and is spatially associated with the Cherry Creek monzonite. Platinum group element mineralization occurs as both discrete platinum group minerals …
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Petrologic and Thermodynamic Investigation of the Aqueous Transport of Platinum-Group Elements During Alteration of Mafic Instrusive Rocks
The hydrothermal transport of platinum-group elements (PGE) was evaluated by integrating a petrologic study of a portion of the Duluth Complex, Minnesota, and a thermodynamic analysis of both PGE solubility in supercritical aqueous solutions and alteration of mafic intrusive rocks. Investigation of …
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A study of the geochemical behaviour of anthropogenic platinum-group elements in a mixed urban-rural catchment: the River Stour, Kent, U.K.
… that may influence the distribution of these elements. Nine sedimentary rocks, four motorway-runoff sediments and twenty-one river sediments were analysed for PGE by NiS fire assay pre-concentration and ICP-MS. The highest element abundances occur in a sample of ashed sewage sludge (total PGE …
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A geochemical profile through the Uitkomst Complex on the farm Slaaihoek, with special reference to the platinum-group elements and Sm-Nd isotopes
… rocks of the lower part of the Transvaal Supergroup. It is situated on the farms Uitkomst 541JT and Slaaihoek 540JT, about 25 km north of Badplaas and 50 km east of the eastern limb of the Bushveld Complex in the Mpumalanga province of South Africa. The intrusion plunges between 8 to 10º to the …
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ΚΑΤΑΝΟΜΗ ΤΩΝ ΣΤΟΙΧΕΙΩΝ ΤΗΣ ΟΜΑΔΑΣ ΤΟΥ ΛΕΥΚΟΧΡΥΣΟΥ (PGE) ΚΑΙ ΤΟΥ ΧΡΥΣΟΥ ΣΕ ΧΡΩΜΙΤΙΚΑ ΜΕΤΑΛΛΕΥΜΑΤΑ ΚΑΙ ΠΕΤΡΩΜΑΤΑ ΤΟΥ ΟΦΙΟΛΙΘΙΚΟΥ ΣΥΜΠΛΕΓΜΑΤΟ...
THE DISTRIBUTION OF PLATINUM GROUP ELEMENTS IN VOURINOS OPHIOLITE COMPLEX REVEALED A SIGNIFICANT VARIATION IN THE COMPOSITION OF CHROMITE ORES AND HOST ROCKS,WHICH WAS CONSIDERED BY PREVIOUS AUTHORS TO BE VERY RESTRICTED. CHROMITE AND HOST ROCK GEOCHEMISTRY STUDY THROUGHOUT THE VOURINOS OPHIOLITE …
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The Helium-Ion-Microscope Secondary-Ion-Mass-Spectrometer: A New Tool for Earth and Materials Science
… a new tool which allows for the measurement of elements and isotopes at nanoscale resolution, the capabilities of which have yet to be explored on geological materials. Here we explore the limits of this instrument on geological materials for the first time, from light element measurements, …
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Magmatic evolution of the southern Centinela district, northern Chile: insights from PGE geochemistry and zircon fertility tools
… formation. Recent studies have shown that the platinum group elements (PGE) are sensitive indicators of sulphide saturation in evolving magma systems, which may be a key in controlling the fertility of Cu and Au in porphyritic deposits. The Centinela District, located in northern Chile, is part …
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Magmatic evolution of the southern Centinela district, northern Chile: insights from PGE geochemistry and zircon fertility tools
… formation. Recent studies have shown that the platinum group elements (PGE) are sensitive indicators of sulphide saturation in evolving magma systems, which may be a key in controlling the fertility of Cu and Au in porphyritic deposits. The Centinela District, located in northern Chile, is part …
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In situ mineral geochemistry as a guide to ore-forming processes
… South Africa - the largest known repository of platinum-group elements (PGEs). These studies revealed a prospective PGE horizon and provide the first evidence for extensive equilibration of plagioclase in cumulate rocks.
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In situ mineral geochemistry as a guide to ore-forming processes
… South Africa - the largest known repository of platinum-group elements (PGEs). These studies revealed a prospective PGE horizon and provide the first evidence for extensive equilibration of plagioclase in cumulate rocks.
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An investigation into chemical factors that affect the behaviour of Gangue minerals in the flotation of PGM ores
… is one of the key steps in the beneficiation of Platinum Group Elements (PGE) from the Bushveld Complex in South Africa. This process aims to optimise the recovery of valuable PGE and sulphide minerals and the rejection of unwanted gangue minerals. The major reefs are exploited in South Africa …
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An electrochemical investigation of platinum group minerals
… is the largest ore body in the world hosting platinum group elements (PGEs). It is a stratified orebody with three major reefs namely, the Merensky reef, UG2 reef and the Platreef. Platinum and palladium are the most abundant PGEs found in the Bushveld complex. They occur in the form of …
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