Results 211 to 220 of about 4,365 (259)
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Distribution of platinum-group minerals in ophiolitic chromitites
Transactions of the Institution of Mining and Metallurgy Section B-Applied Earth Science, 2009This paper reviews the distribution of platinum-group minerals in ophiolitic chromitites. Our data and literature data, obtained by in-situ investigation of polished sections and techniques of mechanical separation [hydroseparation (HS), or combining electric pulse disaggregation (EPD) plus HS], are contrasted.
JOSÉ Maria Gonzalez Jiménez +2 more
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Electrochemical interactions of platinum group minerals with copper sulphate
Minerals Engineering, 2017Abstract Activation of sulphide minerals by copper sulphate is common practice on platinum group mineral (PGM) concentrators. However, the role of copper sulphate in the flotation of PGMs is still unclear especially in the case of those PGM ores which contain relatively low concentrations of sulphides.
Margreth Tadie +2 more
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Experimental Aspects of Platinum-Group Minerals
2018Anna Vymazalová, Dmitriy Chareev
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Platinum Group Elements Mineralization
2020Platinum group element (PGE) mineralization is associated with ultramafic and mafic rocks. There are three major types of PGE mineralization in Mongolia. The most common is (1) PGE mineralization related to ophiolites and includes podiform chromite, (2) PGE in layered gabbro intrusion, and (3) PGE-Au placer.
Baasandorj Altanzul, Ochir Gerel
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On the Management of Gangue Minerals in the Flotation of Platinum Group Minerals
Mining, Metallurgy & Exploration, 2018The Bushveld Complex of South Africa contains almost 90% of the world’s reserves of platinum group minerals (PGMs). In the flotation of PGMs, there are significant challenges arising from the need to treat ever-decreasing grades of the relevant ore deposits.
Cyril O’Connor +3 more
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Biological role in the transformation of platinum-group mineral grains
Nature Geoscience, 2016Platinum-group elements are strategically important metals. Finding new deposits is becoming increasingly difficult owing to our limited understanding of the processes that affect their mobility in surface environments. Microorganisms have been shown to promote the mobility of metals around ore deposits.
Reith, F. +10 more
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Platinum-Group Minerals from a Hydrothermal Environment
Economic Geology, 1974Ore microscopy, paragenesis, two-temperature hydrothermal copper deposit, optical and physical properties, no X-ray data obtained; Messina, South Africa; see also this Bibliography, Cabri and Pickwick ...
P. Mihalik +2 more
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Platinum-group minerals in Tasmania
Economic Geology, 1981Platinum-group minerals in Tasmania occur mostly in placer deposits and are composed mainly of iridosmine and rutheniridosmine. Platinum-rich alloys are rare. Silicate inclusions in the metals include olivine (Fo (sub 94-89) ), enstatite, and nonstoichiometric pyroxene rich in Ca, Mg, and Al.
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The development of platinum-group minerals in laterites
Economic Geology, 1986Consideration of chloride complexes with the platinum-group elements (Fuchs and Rose, 1974; Westland, 1981) has shown that they can enter into solution at low temperatures under acid conditions with a high Eh. Complexes may also be formed with other ligand ions or soil colloids under similar conditions.
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First find of nephrite with accessory minerals of the platinum group
Doklady Earth Sciences, 2017The relic minerals of the platinum group (MPG) were found for the first time in nephrite of tremolite–diopside composition associated genetically with the boninite dike of the Gorlyk-Gol deposit. This latter is confined to a segment of the zone of serpentinite melange in the southern part of the Ospinsko–Kitoi ultrabasite massif in the East Sayan ...
A. V. Tatarinov +3 more
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