Determination of the copper-nickel ores formation sequence of the Kun-Manye deposit (Amur region)

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Abstract

The purpose of the article is to determine the sequence of mineral formation of copper-nickel ores of Kun-Manie deposit, which is located in Zeya district of Amur region. Three ore chutes take part in the structure of the deposit. Ore-bearing formations are sheet and sheetlike bodies of ultra-basic composition of the Kun-Manien complex, lying among rocks of crystal foundation of the Early Archean. Among the rocks, hornblende differences of gabbro-pyroxenites and pyroxenites predominate. In addition to nickel, the ores contain a wide range of associated components. The ores oxidation zone within the deposit and the entire ore field is not developed. The relevance of the work is due to the fact that detailed studies of ore minerals have not previously been carried out. The study presented in the work was conducted by polarizing ore microscope on polished ore samples characterizing different zones of the ore body. The result of the study was the establishment of mineral paragenesis and the sequence of mineral formation. It has been determined that the main ore minerals are pyrrhotine, pentlandite, also found - pyrite, chalcopyrite, less often - ilmenite, magnetite, sphalerite, platinum group elements. Ore mineralization formed in two stages. The magmatic stage is an early and main mineral formation phases including pyrite-magnetite, polymetallic and pentlandite associations. The hydrothermal stage is a late phase involving a pyrite association.

About the authors

Alexander E. Kotelnikov

Peoples’ Friendship University of Russia (RUDN University)

Author for correspondence.
Email: kotelnikov-ae@rudn.ru

Associate Professor of the Department of Mineral Developing and Oil & Gas Engineering of Engineering Academy of RUDN University, PhD in Geology

6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation

Daria A. Kolmakova

Peoples’ Friendship University of Russia (RUDN University)

Email: kotelnikov-ae@rudn.ru

student of the Department of Mineral Developing and Oil & Gas Engineering of Engineering Academy of RUDN University

6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation

Elena M. Kotelnikova

Peoples’ Friendship University of Russia (RUDN University)

Email: kotelnikov-ae@rudn.ru

senior lecturer of the Department of Mineral Developing and Oil & Gas Engineering of Engineering Academy of RUDN University, PhD in Geology

6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation

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Copyright (c) 2020 Kotelnikov A.E., Kolmakova D.A., Kotelnikova E.M.

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