MORPHOLOGY AND INTERNAL STRUCTURE OF PGE MINERALS FROM CHROMITITES OF ALKALINE-ULTRAMAFIC KONDYOR MASSIF (ALDAN SHIELD, RUSSIA)

A.A. Temnikov, S.V. Petrov , Stepanov S.Yu.

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Abstract

A limited occurence of metacrystals and pseudomorphs of secondary minerals, including tulameenite, tetraferroplatinum, ferronickelplatinum, makes a difference between Kondyor massif and Ural or Koryak zoned clinopyroxenite-dunite massifs of folding regions. A prevalence of tetraferroplatinum-group minerals among total amount of PGM from chromitites of Ural or Koryak zoned massifs is a result of their island arc origin, where the basic magmatism is accompanied by large amount of water fluids (Ivanov, 2011). Limited presence of secondary minerals can appear to be typomorphic sign of PGM association in chromitites from clinopyroxenite-dunite massifs formed in inner parts of platform.
Original languageEnglish
Pages (from-to)305-308
Number of pages4
JournalMAGMATISM OF THE EARTH AND RELATED STRATEGIC METAL DEPOSITS
Volume36
StatePublished - 25 Apr 2019

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