Abstract: Concentrations of platinum group elements (PGE) and Re–Os isotopic compositions were determined for a suite of peridotite xenoliths from Cenozoic Beiyan volcanoes within the Tan-Lu fault zone, eastern North China Craton (NCC). Previous petrographic and geochemical data indicate the existence of considerable modification …
Three major sulfide zones containing platinum group elements (PGE) have been identified in the upper part of the ultramafic sequence of the Great Dyke. The PGE are at the bases of the sulfide zones; the lower two have sparse sulfide mineralization over a thick interval; the upper zone contains higher grade in a thinner stratigraphic layer.
Based on the studies of paragenetic assemblages of platinum-group minerals (PGM) from placers and chromitite ores associated with zonal-ring dunite intrusions in the Aldan Shield, on the Siberian platform, a novel model for the PGM formation is offered, which implies separation of a Cr-rich oxide liquid with significant …
Abstract. The platinum group metals (PGM), consist of six elements: platinum, palladium, rhodium, iridium, ruthenium, and osmium. Naturally occurring minerals of PGM may …
Abstract The article contains sections titled: 1 History 2 Properties 3 Occurrence 3.1 Abundance 3.2 Ores and Their Origin 3.3 Primary Deposits 3.4 …
Abstract. Platinum Group Elements (dominated by palladium) are present in the Ni-Cu-Co bearing massive sulphide ore of the Uitkomst Complex, Mpumalanga Province, South Africa. Mineralogical investigations were conducted in two different parts of the ore body and it was found that these elements are contained in fine-grained mineral …
The recovery of platinum group-metals (PGMs) has attracted increasing attention owing to their scarcity, economic importance, and criticality. Traditional techniques for PGM recovery often involve the use of toxic reagents and require strict extraction conditions, posing challenges for their implementation in complex environments. In this paper, a novel …
Abstract. The Kapalagulu intrusion in eastern Tanzania hosts a major, 420-m-thick, stratiform/stratabound platinum group element (PGE)-bearing sulfide. ... stratiform/stratabound platinum group element (PGE)-bearing sulfide zone—the Lubalisi reef—within a prominent, chromititiferous, harzburgite unit close to its stratigraphic base. ...
Abstract. Platinum-group elements (PGE) are used in an increasing number of applications, and emissions are resulting in elevated environmental concentrations of …
Abstract. Mafic-ultramafic intrusive complexes possess a considerable capacity for hosting Ni-Cu-platinum group element (PGE) sulfide deposits. However, the mapping of small outcrops over large areas by field surveys is time-consuming. In this study, WorldView-3 (WV-3) data with moderate spectral and very high spatial resolution …
Abstract. Platinum-group elements (PGE) are used in an increasing number of applications, and emissions are resulting in elevated environmental concentrations of these normally rare metals. Automobile exhaust catalysts, which use Pd, Pt, and Rh as active components, are the main source of PGE emitted into urban and …
In spite of very significant progress in performance of platinum group metal-free (PGM-free) electrocatalysts for oxygen reduction reaction (ORR) in the past two decades, the activity and especially the stability and durability of these catalysts remain insufficient. This applies even to the catalysts derived from transition metals, nitrogen, and carbon via a …
Abstract. The origin of certain alluvial platinum-group mineral (PGM) grains is controversial, with two major proposed models. One involves primary. ... The other involves in addition, solution of the platinum-group elements (PGE) during weathering of the ultramafic source rocks, probably by organic reactions, followed by the supergene …
Abstract. Consideration of chloride complexes with the platinum-group elements (Fuchs and Rose, 1974; Westland, 1981) has shown that they can enter into ... The conditions required for the same processes to act upon the platinum-group elements are shown to be less extreme than those required for gold, and it is concluded that solutions similar ...
The formation of ore deposits of the platinum-group elements (PGE) requires that their concentrations be raised about four orders of magnitude above typical continental crustal abundances. Such extreme enrichment relies principally on the extraction capacity of sulfide liquid, which sequesters the PGE from silicate magmas.
Abstract: The major applications of PGMs are as catalysts in automotive industry, petroleum refining, environmental (gas remediation), industrial chemical …
ABSTRACT . The platinum group elements (PGEs) are crucial for modern technology, including platinum, palladium, rhodium, ruthenium, osmium, and iridium. The PGEs can be found in a variety of mineral deposits, including stratiform systems, norite intrusions, nickel-copper bearing sills, and placer systems. ...
Mineralization in the platinum-group elements occurs in lodes in the dunite – clinopyroxenite – gabbro Gal'moenan complex, in the Koryak–Kamchatka Platinum Belt of Russia, and in associated placers, namely those along the Levtyrinyvayam River and Ledyanoy and Penistiy creeks at different distances from the source.
The platinum group elements (PGEs) are crucial for modern technology, including platinum, palladium, rhodium, ruthenium, osmium, and iridium. The PGEs can be found in a …
Wood, S.A. (2002) The aqueous geochemistry of the platinum-group elements with applications to ore deposits. Pp. 211 – 249 in: The Geology, Geochemistry, Mineralogy and Mineral Beneficiation of Platinum-Group Elements (Cabri, L.J., editor). Canadian Institute of Mining, Metallurgy and Petroleum, Special Volume 54.Google Scholar
Abstract. The formation of platinum-group minerals (PGM) during magma differentiation has been suggested to be an important process in primitive magma evolution, but decisive textural evidence is difficult to obtain because PGM tend to be very small and very rare. We have investigated Cr-spinel phenocrysts from two oxidized magmas …
Abstract. High-grade Cu mineralization was recently discovered in the Mbesa prospect in southern Tanzania, but its origin is poorly constrained. Herein, ... Platinum group minerals present are michenerite (PdBiTe) and sudburyite (PdSb). PGE concentrations expressed as Pd + Pt + Au are up to 1.31 and 1.04 ppm in the massive …
Abstract and Figures. A review of platinum group metals is presented. The platinum group metals is a family of six metals occurring together in nature mainly in the elemental state, or as an...
Abstract. Low-sulfide platinum group element (PGE) mineralization of the Norilsk-type intrusions is located within the Upper Gabbroic Series, which comprises rocks heterogeneous in texture and composition. The highest grade of 10 to 50 g/t PGEs is confined primarily to chromitiferous taxitic gabbrodolerite, which forms irregular lens- …
Abstract Platinum group metal (PGM) nanoparticles (NPs) have been investigated in a variety of research fields such as catalysis and electronics. Alloying has been recognized as one of the most efficient ways of improving or creating properties in metals. Among the types of alloys, solid-solution alloy NPs have the advantage of being …
The platinum-group elements (PGE) include platinum, palladium, rhodium, ruthenium, iridium, and osmium. These metals have similar physical and chemical properties and occur together in nature. The properties of PGE, such as high melting points, corrosion resistance, and catalytic qualities, make them indispensable to many industrial applications.
Abstract. The detectable footprints of komatiite-hosted nickel sulfide deposits are typically very small, but can potentially be enlarged by identifying ... This study examines the spatial variability of whole-rock concentrations of platinum group elements (PGEs) within the host flow to massive nickel sulfide mineralization at the Long-Victor ...
Abstract. The platinum-group elements (PGE) include platinum, palladium, rhodium, ruthenium, iridium, and osmium. These metals have similar physical and chemical properties and occur together …
We report a catalyst family of high-entropy alloy (HEA) atomic layers having three elements from iron-group metals (IGMs) and two elements from platinum-group metals (PGMs). Ten distinct quinary compositions of IGM-PGM-HEA with precisely controlled square atomic arrangements are used to explore thei …
A large variety of platinum-group minerals (PGM) are associated with base-metal sulfides in the Wellgreen Ni–Cu–PGE deposit, Yukon. Various solid-solutions occur in this deposit: (1) palladoan melonite – merenskyite – moncheite, (2) testibiopalladite – michenerite, (3) sudburyite – kotulskite – sobolevskite – (Ni,Pd)(Te,Sb,Bi) 1+x (palladoan imgreite – …
Abstract. Due to their "iron-loving" properties, platinum-group elements (PGE) are expected to be stored in the Earth's core. Although very low, at a few parts per …
Abstract. The platinum-group elements (PGE) tend to exist in the metallic state or bond with sulfur or other Group Va and VIa ligands, and often occur as trace …
