Morphology, composition, and ontogenesis of platinum-group minerals in chromitites of zoned clinopyroxenite–dunite massifs of the Middle Urals

S. Yu. Stepanov, R. S. Palamarchuk, A. V. Antonov, A.V. Kozlov, D. A. Varlamov, D. A. Khanin, A. A. Zolotarev

Research outputpeer-review

2 Citations (Scopus)

Abstract

We present results of analysis of the morphology and chemical composition of platinum-group minerals from chromite-platinum orebodies of zoned clinopyroxenite-dunite massifs in the Middle Urals (Nizhnii Tagil, Svetlyi Bor, Veresovyi Bor, and Kame-nushenskii). Study of more than 500 grains has given an insight into the sequence of formation of platinum-group minerals in chromitites of the studied massifs. Three assemblages of platinum-group minerals have been revealed: magmatic (Os-Ir-Ru intermetallic compounds, isoferroplatinum, ferroplatinum, sulfides of the isomorphous series erlichmanite-laurite and kashinite-bowieite, and thiospinels of the series cuproiridsite-cuprorhodsite-malanite); postmagmatic (with a predominance of tulameenite, tetraferroplatinum, and fenonickelplatinum, resulted from sapcntinization of dunites); and latest secondary (minerals with a predominance of PGE sulfides, arsenides, sulfoantimonides, sulfoarsenides, plumbides, and amalgams).

Original languageEnglish
Pages (from-to)47-67
Number of pages21
JournalRussian Geology and Geophysics
Volume61
Issue number1
DOIs
Publication statusPublished - Jan 2020

Scopus subject areas

  • Geophysics
  • Geology

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