About 80% of the worlds' reserves for platinum group metals (PGMs) are in South Africa's Bushveld Igneous Complex. Processing of PGM involves comminution, flotation, smelting, converting, base metals refinery and precious metals refinery. Due to increasing chrome content in the feed and the challenges associated with operating high chrome feed, alternative …
Platinum Group. Chapter; pp 280–289; Cite this chapter; Download book PDF. Minerals Handbook 1996–97. Platinum Group Download book PDF. Phillip Crowson 433 Accesses. Abstract. The estimated reserve base is 66000 tonnes, concentrated in the same countries as reserves. Download to read the full chapter text. Chapter PDF. Keywords.
The Wengeqi mafic–ultramafic intrusion is located in the northern margin of the North China Craton (NCC), which was an Andean-style active margin in the Paleozoic (Meng and Ge, 2001).The intrusion contains many platinum-group minerals (PGMs) (Su and Lesher, 2012; Liu et al., 2013), and is one of several PGM-bearing mafic–ultramafic intrusions along the northern …
Abstract— This study presents results of platinum group element (PGE) analyses of impactites from the Yaxcopoil-1 (Yax-1) and Yucatán 6 drill cores of the 180 km-diameter Chicxulub crater. These are the main elements used for projectile identification. They were determined by nickel sulfide fire assay combined with inductively coupled plasma mass …
Abstract The last several decades have witnessed the success and popularity of colorimetric lateral flow assay (CLFA) in point-of-care testing. ... Recently, platinum-group metal nanoparticles (PGM NPs) with peroxidase-like activities have emerged as a type of promising colorimetric labels for enhancing the sensitivity of CLFA. By incorporating ...
Abstract. Platinum-group minerals (PGM) have been identified in samples from the Katiniq and Zone 2 orebodies, Raglan deposits, Cape Smith, northern Quebec. The most abundant PGM (in area %) is sperrylite, comprising a third of all the grains. Overall, sudburyite and merenskyite make up the majority of the remaining PGM, with the others ...
Platinum group metals (PGMs) assume an important role within the chemistry and chemical engineering due to their exceptional chemical stability in high temperatures and various environmental conditions. Their unique attributes make them highly demanded materials across an array of industries. Nevertheless, the gradual depletion of PGM reserves …
Platinum group metals (PGMs) assume an important role within the chemistry and chemical engineering due to their exceptional chemical stability in high temperatures and various environmental conditions. Their unique …
Abstract. Platinum-group elements (PGE) are strongly chalcophile and are therefore potentially sensitive indicators of processes involving segregation and accumulation of sulfide melts from silicate magmas. Over 500 new high-precision PGE data for komatiites and komatiitic basalts, spanning a wide range of emplacement and crystallization ...
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 concentration of the platinum-group …
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 growth ...
Platinum-group elements (PGE) are widely used in tracing various geological processes, such as the origin and evolution of mantle-derived silicate melts and the formation of magmatic sulfide deposits (Barnes and Ripley, 2016; Harvey and Day, 2016). ... Show abstract. The Devonian Wengeqi mafic–ultramafic intrusion, situated on the northern ...
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- and vein ...
Abstract. The Lower Group chromitites of the Bushveld Igneous Complex are mined for chromite as a primary product. The recovery of platinum group elements. Skip to Main Content ... Platinum group minerals and base-metal sulfides are studied by mineral liberation analysis and electron microprobe analysis to define distinct assemblages and to ...
Platinum-group minerals (PGM) have been identified in chromitite from two localities in the Pindos ophiolite complex in Greece, Milia and Korydallos. At Milia, the PGM are predominantly Os, Ir, and Ru, i.e., IPGE-bearing, as is typical of many chromitites in ophiolitic complexes; they consist mainly of IPGE alloys and sulfarsenides rather than ...
Abstract. Different types of chromitite, including texturally massive, disseminated and banded varieties, are present in the Kop ophiolitic ultramafic. ... in distinct contrast to MORB-type magma. Total contents of platinum-group elements (PGE) in different deposits range from 87 to 520 ppb, with an average of 199 ppb. Values normalized to ...
Precious metals of gold, silver and six metals in platinum group (platinum, palladium, ruthenium, rhodium, iridium and osmium) are widely used in such industrial fields as electronics ...
Abstract. Despite the fact that pyrite is a relatively common phase in Ni-Cu-Platinum-Group Elements (PGE) magmatic sulphide deposits, the trace element
Three postorogenic Alaskan-type ultramafic to mafic intrusive suites in the Klamath Mountains, ranging in age from 142 to 163 m.y. and intruding metavolcanic, metasedimentary, or ophiolitic cumulate ultramafie to gabbroic rocks, were examined for their platinum-group element content.
Analytical data for the platinum-group elements (PGE) and gold on 17 samples from sulfide-mineralized and -unmineralized rocks of the lower portion of the upper zone and two samples from the main zone of the eastern Bushveld Complex are presented.
Platinum-group elements (PGE) are mined predominantly from deposits that have formed by the segregation of molten iron-nickel-copper sulfides from silicate magmas. The absolute …
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 by melt ...
Platinum-group metals are found mainly as arsenides, sulfarsenides, sulfides and platinum-iron alloys in gabbroic rocks. Major losses of platinum-group metals in extraction most frequently occur during beneficiation. In the massive sulfide rocks of Minnesota's copper-nickel bearing Duluth Complex, platinum-group minerals are in close association with arsenide …
Platinum group metals (PGMs) are regarded as strategic metals due to high melting point, corrosion resistance and catalytic activity. They are widely employed in …
Among the widespread use of platinum group metal materials in various fields, approximately 50 % of Pt and 86 % of Pd were used in the catalysis industry (automotive catalysts and petrochemical catalysts), especially in automotive catalysts (more than 70 %) [7].Spent automotive catalysts (SACs) are the most important source of secondary resources for PGMs [8].
The selenides of platinum-group metals (PGMs) are emerging as promising catalysts for diverse electrochemical reactions. To date, most studies have focused on single …
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Abstract. The timing and extent of sulfide saturation have been suggested as controlling factors in the formation of economically significant porphyry Cu d ... Accordingly, we have characterized the whole-rock geochemistry, including platinum-group elements (PGE), of igneous intrusions in the post-collisional Chongjiang porphyry Cu–Mo–Au ...
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. Secondary Deposits 3.5. …
Abstract. The mafic-ultramafic Uitkomst Complex of South Africa is a tubular intrusion that is believed to be coeval and cogenetic with the 2054 Ma ... The basal 300 m of the intrusion hosts disseminated Ni-Cu-platinum group element (PGE) sulfides (100 Mt at ca. 0.55% Ni, 0.17% Cu). In addition, several lenses of massive sulfides (2.9 Mt at 2. ...
Acylthiourea-based complexes of ruthenium, rhodium, palladium, osmium, iridium and platinum (PGMs) are reviewed here. The complexes are elaborated on their catalytic and …
One sample contains 855 ppb of total platinum-group elements (PGE) and shows a chondrite-normalized PGE pattern with a slightly positive slope, with enrichment in Pt and Pd relative to Os and Ir. Ruthenium and Rh show positive and negative peaks, respectively. In agreement with the PGE distribution, the following platinum-group minerals (PGM) ...
