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Russian Geology and Geophysics

2007 year, number 3

ISOFERROPLATINUM MINERAL ASSEMBLAGE IN THE NORTHWESTERN SALAIR GOLD PLACER

M.Yu. Podlipsky, G.V. Nesterenko, A.P. Krivenko
Institute of Geology and Mineralogy, Siberian Branch of the RAS, 3 prosp. Akad. Koptyuga, Novosibirsk, 630090, Russia
Keywords: Gold placer; PGE minerals; isoferroplatinum assemblage; isoferroplatinum; Salair
Pages: 291-298

Abstract

Isoferroplatinum mineral assemblage has been first discovered in the Simonovsky Brook gold placer localized in the Egor'evskoe gold-bearing district (Salair Range). It includes isoferroplatinum (Pt3Fe) grains with inclusions of cuprorhodsite CuRh2S4, braggite (Pt,Pd)S, vysotskite PdS, high-Pt rhodarsenide (Rh,Pd,Pt)2 As, keithconnite Pd3Te, hollingworthite RhAsS, Cu and Fe sulfides, basic plagioclase, magnetite, epidote, quartz, kaolinite, and leucoxene. The assemblage might have been produced from small gabbroid bodies widespread in the northwestern Salair region, including those of the Uralian platinum-bearing type, or from gabbroids of other complexes.