Results 191 to 200 of about 10,064,357 (239)

Characterizing the Behaviour of Platinum Group Minerals in a Grinding Circuit

Minerals Engineering, 2021
Abstract This paper introduces a methodology to determine the gravity-recoverable platinum group minerals (GRPGMs) of a stream, and behaviour of platinum group minerals (PGMs) in a ball mill-cyclone circuit. The GRPGM is determined by a modification of the method developed for gravity-recoverable gold (GRG).
Yue Hua Tan, James A Finch
exaly   +2 more sources

Electrochemical Interactions of Platinum Group Minerals With Copper Sulphate

Minerals Engineering, 2017
Abstract 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, J G Wiese, C T O'Connor
exaly   +2 more sources

CONSIDERATIONS ON THE PRESENCE OF PLATINUM AND PLATINUM GROUP ELEMENTS IN MINERALIZATIONS FROM ROMANIA.

Revue Roumaine de Géologie / Romanian Journal of Geology, 2023
Platinum Group Elements (PGEs) are among the rarest metals in the world and are also considered as critical metals/minerals. Their economically important occurrences are limited to orthomagmatic deposits, porphyry-type hydrothermal deposits, alluvial accumulations (placers), and residual-type deposits.
SORIN SILVIU UDUBAȘA, MIHAI GHIȚĂ, ANDREEA NICOLETA GHIȚĂ, FLORENTIN STOICIU, LUISA ELENA IATAN   +4 more
openaire   +1 more source

Platinum Group Elements Mineralization

2020
Platinum 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
openaire   +1 more source

On the Management of Gangue Minerals in the Flotation of Platinum Group Minerals

Mining, Metallurgy & Exploration, 2018
The 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, Jenny Wiese, Kirsten Corin, Belinda McFadzean   +3 more
openaire   +1 more source

Biological role in the transformation of platinum-group mineral grains

Nature Geoscience, 2016
Platinum-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., Zammit, C., Shar, S., Etschmann, B., Bottrill, R., Southam, G., Ta, C., Kilburn, M., Oberthür, T., Ball, A., Brugger, J.   +10 more
openaire   +4 more sources

Platinum-Group Minerals from a Hydrothermal Environment

Economic Geology, 1974
Ore 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, J. B. E. Jacobsen, S. A. Hiemstra   +2 more
openaire   +1 more source

Platinum-group minerals in Tasmania

Economic Geology, 1981
Platinum-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.
openaire   +1 more source

The development of platinum-group minerals in laterites

Economic Geology, 1986
Consideration 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.
openaire   +1 more source

First find of nephrite with accessory minerals of the platinum group

Doklady Earth Sciences, 2017
The 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, L. I. Yalovik, S. V. Kanakin, A. Yu. Zyablitsev   +3 more
openaire   +1 more source