Results 11 to 20 of about 5,473 (299)
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 are
Katy Evans +8 more
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New mineralogical data on platinum-group minerals from the Río Santiago alluvial placer, Esmeraldasprovince, Ecuador [PDF]
, 2021 Mineralogical studies on platinum-group minerals found in placer deposits from the Río Santiago (Ecuador) are scarce. In this investigation, one sample collected from the Río Santiago alluvial placer was studied via a multi-disciplinary approach ...
Pujol Solà, Núria +3 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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Structural and dynamical properties of sperrylite (PtAs2): a molecular dynamics study [PDF]
MATEC Web of Conferences, 2023 There is a demand for platinum group minerals (PGMs) due to the increase in various applications such as electronics, industrial and medical. Sperrylite (PtAs2) is one of the major PGMs, however its recovery by flotation has been reported to be poor. The
Ntobeng Segoarihle +3 more
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Yankuang ceshi, 2018 The Huili Pt-Pd deposit in Sichuan Province is an independent platinum element ore deposit. In some ore sections, the contents of Pt and Pd have reached industrial grade.
ZHOU Jiao-hua +4 more
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The formation of alluvial platinum-group minerals: present knowledge and the way ahead [PDF]
Mineralogical Magazine, 2021 AbstractThe weathering of platinum-group element (PGE) deposits presents unusual problems, especially in the very active environment of lateritic weathering under tropical conditions. There is clear evidence of the destruction of platinum-group minerals (PGM) to form PGE oxides, or fine intergrowths between relict PGM and iron oxides or hydroxides, as ...
John F.W. Bowles, Saioa Suárez
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Fibrous Platinum-Group Minerals in “Floating Chromitites” from the Loma Larga Ni-Laterite Deposit, Dominican Republic [PDF]
, 2016 This contribution reports on the observation of enigmatic fibrous platinum-group minerals (PGM) found within a chromitite body included in limonite (“floating chromitite”) from Ni-laterites in the Dominican Republic.
Joaquín Proenza +13 more
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