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Unique PGE-Cu-Ni Oktyabr’skoe Deposit (Noril’sk Area, Siberia, Russia): New Data on Its Structure and Mineralization

  • Nadezhda KrivolutskayaEmail author
  • Maria Nesterenko
  • Bronislav Gongalsky
  • Dmitry Korshunov
  • Yana Bychkova
  • Natalia Svirskaya
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Part of the Advances in Science, Technology & Innovation book series (ASTI)

Abstract

The present work involves a study of the internal structure, rock and ore compositions of the Oktyabr’skoe deposit. Two massive orebodies, C-3 and C-4, located in the north and south of the deposit central part are related to gabbro-dolerites subdivided by the Devonian sediments in space. Despite the closely similar structure and composition of the intrusive rocks, the disseminated and massive ores prove to display different chemical and mineralogical compositions. The C-3 orebody consists mostly of tetragonal chalcopyrite and pyrrothite, while the C-4 orebody appears to enclose sulfur-poor chalcopyrite group minerals, namely, talnakhite, putoronite etc. The C-4 orebody turns out to be rich in Cu and PGE in respect of the C-3 one. This ore-associated mineralogical diversity appears to result from differing fs2 taking place during the sulfide melts relating crystallization. It is also suggested that the orebodies, as originating from different portions of magmas, culminated in the formation of two intrusive branches.

Keywords

Noril’sk deposits Platinum group elements Nickel Ore 

Notes

Acknowledgements

The authors thanks the geologists of Norilskgeologia Ltd. V. Rad’ko, \( \boxed{{\text{Yu}}.\;{\text{Burmistrov}},} \) V. Sitnikov for their helpful collaboration with boreholes sampling. This study was supported by RFBR (project No 18-05-70094).

References

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Nadezhda Krivolutskaya
    • 1
    Email author
  • Maria Nesterenko
    • 2
  • Bronislav Gongalsky
    • 3
  • Dmitry Korshunov
    • 2
  • Yana Bychkova
    • 2
  • Natalia Svirskaya
    • 1
  1. 1.Vernadsky Institute of Geochemistry and Analytical ChemistryRussian Academy of ScienceMoscowRussia
  2. 2.Lomonosov Moscow State UniversityMoscowRussia
  3. 3.Institute Geology of Ore Deposits, Petrography, Mineralogy and GeochemistryRussian Academy of ScienceMoscowRussia

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