Results 1 to 10 of about 10,064,357 (239)
Hydrothermal remobilization platinum group elements and their secondary minerals in chromitite deposits of the Eastern Sayan ophiolites (Russia) [PDF]
E3S Web of Conferences, 2019 Serpentinization is an important post-magmatic process in spreading and subducted zones. This process is the cause of the remobilization and redistribution of highly mobile elements, platinum group elements (PGE) and base metals. Secondary platinum group
Kiseleva Ol’ga +3 more
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Gibbs Free Energy of Formation for Selected Platinum Group Minerals (PGM) [PDF]
Geosciences, 2016 Thermodynamic data for platinum group (Os, Ir, Ru, Rh, Pd and Pt) minerals are very limited. The present study is focused on the calculation of the Gibbs free energy of formation (ΔfG°) for selected PGM occurring in layered intrusions and ophiolite ...
Spiros Olivotos +1 more
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Mineralogy and mineral chemistry of detrital platinum-group minerals and gold particles from the Elbe, Germany [PDF]
European Journal of Mineralogy, 2023 In heavy mineral concentrates of the Elbe, gold and platinum-group minerals (PGMs) are observed. Two fractions (> 63 and < 63 µm) of the concentrate are analyzed by reflected-light microscopy, scanning electron microscopy with automated mineralogy ...
M. Junge +3 more
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Petrogenesis of the Platinum-Group Minerals [PDF]
Reviews in Mineralogy and Geochemistry, 2015 The platinum-group minerals (PGM) are a diverse group of minerals that concentrate the platinum-group elements (PGE; Os, Ir, Ru, Rh, Pt, and Pd). At the time of writing, the International Mineralogical Association database includes 135 named discrete PGM phases.
O’Driscoll, Brian +1 more
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CHROMITE-PLATINUM MINERALIZATION OF CLINOPYROXENITE-DUNITE MASSIF ZHELTAYA SOPKA, NORTH URAL [PDF]
Минералогия, 2020 The paper presents the new data on platinum group minerals (PGM) and chromite from the Zheltaya Sopka massif, North Urals. Few chromite bodies along with specific composition of chromite indicate weak ore-forming processes developed in this massif ...
I.A. Kuzmin +4 more
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Frontiers in Earth Science, 2022 The meta-ultramafic bodies of Gomati and Nea Roda are situated in the Serbomacedonian Massif. They demonstrate bimodal character in terms of chromitite chemistry with both Cr- and Al-rich chromitites outcropping in proximity, with no obvious tectonic ...
Alkiviadis Sideridis +7 more
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Frontiers in Earth Science, 2023 The first part of this article can be found here: 10.3389/feart.2023.819129 (DOI). Occurrences of significant concentrations of platinum-group elements (PGE) in porphyry deposits have seen limited attention and the geochemical controls on their ...
Samuel J. Robb +3 more
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Геодинамика и тектонофизика, 2021 In the South Urals, we have identified and investigated two platinum-bearing formations – ophiolite chromitebearing complexes, and the Khudolaz differentiated mafic-ultramafic complex with sulfide Cu-Ni mineralization.
I. R. Rakhimov +2 more
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The origin of platinum group minerals in oceanic crust
Geology, 2023 Abstract Highly siderophile elements (HSEs), including Re and Os, are used extensively as geochemical tracers and geochronometers to investigate the formation and evolution of Earth’s crust and mantle. Mantle rocks are commonly serpentinized, but the effect of serpentinization on the distribution of HSEs is controversial because HSEs ...
Katy Evans +8 more
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Behavior of Platinum-Group Elements during Hydrous Metamorphism: Constraints from Awaruite (Ni3Fe) Mineralization [PDF]
Lithosphere, 2023 Natural Fe-Ni alloys are common in meteorites and, presumably, the Earth’s core, where they host significant platinum-group elements (PGE). However, little is known on PGE concentrations in hydrothermal or metamorphic Fe-Ni alloys (i.e., awaruite Ni3Fe ...
Anton Kutyrev +7 more
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