Mineralogical and chemical zonations observed in massive sulfide ores from Ni-Cu-platinum group element (PGE) deposits are commonly ascribed to the fractional crystallization of monosulfide solid ...
The effect of platinum-group minerals on differentiation of platinum-group elements in magmatic sulfide deposits: Evidence from the Cu-Ni-PGE deposits in the …
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 …
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The concentrations of platinum-group elements (PGE) and chalcophile elements Ni, Co, Au, Ag, Se, Re, Cd, Bi, Te and As have been determined by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) in base metal sulfide minerals (BMS) from the Aguablanca Ni–Cu deposit, SW Spain. The main aim was to …
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Some massive chromitites are also highly enriched in platinum-group elements 1,8, which are industrially used to break down toxic exhaust gases into …
The enactment by more governments of policies to enable greater hydrogen fuel cell mobility would be a massive boost for South Africa's platinum group metals (PGMs) sector, Mining Weekly can ...
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Detail work on the geochemical variations in terms of major, trace and platinum-group elements (PGE) of the massive chromitites and the host ultramafic cumulate rocks of the Sukinda Massif has not been previously undertaken. In this study, we report extensive whole-rock major, trace and platinum-group element data for …
(a) Equilibrium relationships in the Fe–Ni–S system and between platinum-group minerals at 300 °C and 500 bar. Stability boundaries of Fe–Ni–S phase assemblages were constructed with the SUPCRT92 software package (Johnson et al., 1992). The thermodynamic data of platinum-group (Ir, Rh, and Pt) minerals are given in the text.
Rhenium-platinum group elements reveal seawater incursion induced massive lacustrine organic carbon burial. Author links ... The inverse variation between seawater …
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 2.04% Ni, 1.13% Cu, and 6 ppm total PGE) are situated in the immediate floor of the intrusion. We determined the PGE concentrations in 86 samples …
The relative abundances of the Platinum Group Elements in the massive sulphide body are similar to that of other Ni-sulphide deposits such as Sudbury and Noril'sk, but differ significantly from that of the Merensky Reef, UG-2 Reef, and Platreef ore bodies of the Bushveld Complex.
Extreme Fractionation of Platinum Group Elements in Volcanogenic Massive Sulfide Deposits
Request PDF | On Jun 1, 2002, I.V. Vikent'ev and others published Platinum group elements in ores of massive sulfide deposits of the Urals | Find, read and cite all the research you need on ...
The platinum group elements (PGEs) are represented by osmium and show very low concentrations, ∼10pgL−1. From: Treatise ... associations with Ni–Cu in form of Ni–Cu–PGEs sulfide deposits characterized by high-sulfur disseminations and massive, and low-sulfur disseminations such as is the case at Merensky Reef (Bushveld), Voisey ...
All three intrusions contain massive chromite layers and because chromite is one of the first minerals to crystallize it is possible that chromite compositions could indicate the compositions of the magmas. ... Another mineral, either olivine or an Ir-Rh platinum-group mineral, controls Ir and Rh. Compared with chromites from volcanic …
Platinum-group elements (PGE) are most effectively concentrated via sulfide-silicate melt immiscibility; however, under sulfide-undersaturated conditions, PGE may …
Platinum-group elements (PGE) concentrations and platinum-group minerals (PGM) demonstrate high (Os + Ir + Ru)/ (Rh + Pt + Pd) ratios, typical of many Tethyan ophiolitic chromitites. ... Massive chromitites contain Ru-rich laurite and Os-Ir alloys whereas non-massive ores contain Ru-poor laurite. The PGM were included in …
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Sulfide entrainment has previously been recognised as one of the key factors in the formation of massive Ni–Cu sulfide deposits, and it is suggested here that it is also relevant to the formation of PGE deposits. ... Next article in issue; 1. Introduction. Deposits containing Ni, Cu and platinum-group elements (PGE) are usually associated ...
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Magmatic sulfide deposits containing nickel (Ni) and copper (Cu), with or without (±) platinum-group elements (PGE), account for approximately 60 percent of the world's nickel production. Most of the remainder of the Ni production is derived from lateritic deposits, which form by weathering of ultramafic rocks in humid tropical conditions.
Platinum-group minerals are significantly more abundant in the semi-massive (70.8% of a total of 301 identified grains) and chalcopyrite veined (21.2%) ores than in the disseminated ore (8%). The PGM are spatially associated with BMS.
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We report whole-rock major, trace, and platinum-group element (PGE) geochemistry of volcanic rocks from the Teutonic Bore complex that hosts the Jaguar and Bentley Cu–Zn volcanogenic massive ...
The Platinum Group Mineral grains are preferentially associated with pyrrhotite and generally located along grain boundaries. The relative abundances of the …
