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 …

CHAPTER 11: PLATINUM GROUP ELEMENTS EXPLORATION: ECONOMIC CONSIDERATIONS AND GEOLOGICAL CRITERIA Author(s) Tony Green Tony Green Falconbridge Limited, Suite 800, Queen's Quay Terminal, 207 Queen's Quay West, Toronto, Ontario, M5J 1A7, Canada E-mail: [email protected]. …

CHAPTER 13: PLATINUM GROUP ELEMENTS IN GEOCHEMICAL EXPLORATION Author(s) Eion M. Cameron Eion M. Cameron Eion Cameron Geochemical Inc., 865 Spruce Ridge Road, Carp, Ontario, Canada, K0A 1L0 E-mail: eioncam@attglobal. Search for other works by this author on: ...

Nevertheless, sperrylite is the dominant platinum-group mineral recovered in gravity concentrates.Discrete palladium minerals are most abundant in stringers of sulfide in the footwall to the ore, in crosscutting sulfide veins, or in reaction zones associated with hydrothermal veins and porphyries. Within the massive and matrix ores, coarse ...

The Itchayvayamsky Ural-Alaskan-type massif is located in the northernmost part of the Koryak-Kamchatka Platinum Belt (Russia) and is surrounded by two rivers (Kamenistaya and Itchayvayam) that both contain specific PGM …

The Geology, Geochemistry, Mineralogy and Mineral Beneficiation of Platinum-Group Elements.: Edited by Louis J. Cabri. CIM Special Volume 54, Canadian Institute of Mining, Metallurgy and Petroleum, Suite 1210, 3400 de Maisonneuve Boulevard West, Montreal, Quebec H3Z 3B8, Canada. 852 pages, US$150/CDN$220 for non …

Department of Geosciences and Geological and Petroleum Engineering, Missouri University of Science & Technology, 334 McNutt Hall, 1400 N. Bishop Avenue, Rolla, Missouri 65409-1330, USA ... 18 samples from chromitite seams throughout this intrusion are investigated for their whole-rock platinum group element (PGE) contents, …

Biological role in the transformation of platinum-group mineral grains | Nature Geoscience. Letter. Published: 21 March 2016. …

The UG-2 chromitite layer, with its elevated platinum-group element content, is a key marker horizon in the eastern and western limbs of the Bushveld Igneous Complex and the largest platinum-group element chromite-hosted resource of its kind in the world. In contrast, much less is known about its stratigraphic equivalent in the …

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 billion, PGE concentrations measured in mantle-derived rocks are too high to be in chemical equilibrium with the core. The "late veneer" model offers the best explanation for this ...

Abstract. In a cooling solar nebula, five of the six platinum-group elements (PGE) condense as refractory-metal alloys at temperatures above the condensation of Fe-Ni metal. Non-refractory Pd condenses in solid solution with Fe-Ni. Such refractory alloys are preserved in some meteorites, although they are often highly altered.

Platinum-group minerals (PGM) have been mainly observed in the PGE-rich mantle chromitite and, to a lesser extent, in the PGE-poor mantle chromitite, although a few PGM grains have been detected from the MTZ chromitites. The PGM comprise four main categories in the following order of abundance: (1) ...

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 …

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 …

Platinum-group element geochemical constraints on mantle heterogeneity and petrogenesis along the Cameroon Volcanic Line. Original Paper. …

The Upper Group 2 (UG2) chromitite occurs in the Upper Critical Zone and is the single largest PGE resource on Earth, with Pt grading at ~ 2.7 ppm and containing a combined 6,636 × 10 6 tons of measured, indicated and inferred ore (from D. Causey, quoted in Zientek 2012). The UG2 chromitite is broadly stratiform and is approximately 1 m thick ...

Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, 305-350 Republic of Korea ... an energy efficient leaching process has been studied to recover platinum group metals (PGMs) from spent automotive catalyst using electro-generated chlorine as a strong oxidant in a separate …

Geochemistry and mineralogy of platinum-group elements (PGE) in the chromite ores of the Ray-Iz massif have been studied by Volchenko, 1990, Gurskaya, …

Although placer deposits hosting platinum group elements (PGEs) have been found in association with Ural-Alaskan–type complexes in several locations around the world, these ultramafic complexes have traditionally been viewed as sulfide-poor systems and therefore unlikely hosts of economic Ni-Cu sulfide deposits. Sulfide mineralization in …

The Jinbaoshan platinum group element-(Cu)-(Ni) deposit in southwest China is a sulfide-poor magmatic platinum-group element deposit that experienced multiple phases of post-magmatic modification. The sulfide assemblages of most magmatic Ni-Cu-platinum-group element deposits in China and elsewhere in the world are …

Federal Institute for Geosciences and Natural Resources (BGR), Stilleweg 2, D-30655 Hannover, Germany ... The present work focuses on the description of the assemblage of detrital platinum-group minerals (PGM) found in rivers draining the Great Dyke. This PGM assemblage distinctly contrasts with the suite of PGM in the pristine, …

Wolf Maier, Sarah-Jane Barnes; Platinum-group elements in the UG1 and UG2 chromitites, and the Bastard reef, at Impala platinum mine, western Bushveld Complex, South Africa: Evidence for late magmatic …

Geoscience. Australia. Technical Report PDF Available. Platinum-group elements in Australia: Geological setting, mineral systems, and potential. January 2014. Report number: 2014/51....

Additional proportions of platinum-group elements are hosted by Fe-hydroxides and secondary hydrosilicates (e.g., serpentine group minerals and chlorite). In supergene ores, only low recovery rates (ca. 40%) are achieved due to the polymodal and complex platinum-group element distribution. To achieve higher recovery rates for the …

September 20, 2023. For the past 111 years, the COUNCIL FOR GEOSCIENCE (CGS) has played a vital role in South Africa as the custodian of geoscientific data – both on and off-shore. Its work is pivotal in ensuring that the country can attract 5% of all global exploration budget by 2025. The COUNCIL FOR GEOSCIENCE is one of the National Science ...

The identification of minerals that occur as tiny and rare phases such as most of the natural platinum-group minerals (PGM) is a challenging target. The main reason for that resides in their size (generally less than 10 micrometres) and mode of occurrence ( i.e. polyphasic aggregates) that make problematic the identification by standard X-ray ...

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 chondrite (CI) show negatively sloping PGE patterns with slight positive Ru and Pd anomalies. Primary solid inclusions of silicates consist of olivine, amphibole, phlogopite and rare clinopyroxene ...

Significant differences in the proportions of platinum-group elements within a particular layer are only evident on a regional scale.The platinum-group minerals of the middle group of chromitite layers in the Marikana area of the western Bushveld are mainly sulfides and arsenides. Laurite is the most common platinum-group mineral and is mostly ...

Nature Geoscience - Mineralization of platinum-group elements in mafic intrusions occurs due to repeated self-intrusion of magma, according to strontium isotope heterogeneities preserved in the ...

The origin of certain alluvial platinum-group mineral (PGM) grains is controversial, with two major proposed models. One involves primary formation within ultramafic intrusions, followed by weathering into laterites with no further alteration prior to alluvial concentration. The other involves in addition, solution of the platinum-group ...