MINERALOGICAL AND SPECTROSCOPIC FEATURES OF Pt ARSENIDES OF PAY-KHOY Cu-Ni OCCURRENCES (NENETS AUTONOMOUS OKRUG)
The paper considers the mineralogical and spectroscopic features of sperrylite, which is a main Pt source of low-sulfide Pt-bearing Cu-Ni occurrences of the devonian Pay-Khoy sills. Platinum arsenides occur in silicates/oxides, sulfides and at contacts between sulfides and silicates/oxides. Raman spectroscopic studies shown that Raman spectrum of anhedral sperrylite inclusions and individual crystals exhibit two (210-214 and 274-277 cm-1) and three (208-214, 219-223 and 272- 277 cm-1) intense bands, respectively. According to paragenetic assemblage, sperrylite was formed at temperatures of <500 °C.Figures 4. Table 1. References 14.