Sources of noble metals (Au, Pt, Pd) in the North Caucasus
https://doi.org/10.24930/1681-9004-2019-19-3-465-471
Abstract
Research subject. To date, two different-age regional sources of noble metals have been identified in the North Caucasus: 1) Caledonian, which includes ultrabasites of the Front Range (Au, Pt, Pd) and 2) Hercynian, which features copper-pyrite (Au) and black-shale deposits (Au, Pt, Pd). Noble metals in these sources form large areal accumulations and ore anomalies, thus presenting a great research interest.
Materials and methods. This paper reports the results of a long-term geological fieldwork, which consisted in a detailed geological and mineralogical mapping of the Devonian shale and volcanic rocks, as well as of the Ordovician ultrabasites, in the North Caucasus. During this work, maps, diagrams and sections of ore mineralization sites were complied, and collection of lithogeochemical, ore and groove samples was conducted. Laboratory studies included the examination of the obtained samples using geochemical, petrographic, mineragraphic and physico-mineralogical methods.
Results. The main sources of Au, Pt and Pd, as well as the genetic types of their deposits were established. Four different-age geochemical anomalies (fields) with a constant total Au, Pt and Pd content of over than 1 g/t were identified.
Conclusion. Large-scale Au, Pt and Pd anomalies in the North Caucasus have been discovered, which form a new North Caucasian province of noble metals.
Keywords
About the Authors
I. A. Bogush
Novocherkassk polytechnic institute
Russian Federation
Russian Federation
Il’ya A. Bogush
132 Prosveshenay st., Novocherkassk, 346428
V. I. Cherkashin
Institute ofGeology Dagestan Sc. Cenetr, RAS
Russian Federation
Russian Federation
Vasily I. Cherkashin
75 M. Yaragsky st., Makhachkala, 367030
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Review
For citations:
Bogush I.A., Cherkashin V.I. Sources of noble metals (Au, Pt, Pd) in the North Caucasus. LITHOSPHERE (Russia). 2019;19(3):465-471. (In Russ.) https://doi.org/10.24930/1681-9004-2019-19-3-465-471
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