Geological and isotopic substantiation of the age of mineralization of the Tokur gold mining center of the Amur province

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Abstract

Data on the geological and isotopic age of the formation of the gold mineralization of the Tokur gold ore center of the Amur gold-bearing province are analyzed. It is shown that the mining of ore gold was carried out mainly from deposits of gold-sulfide (Malomyr) and gold quartzformation with albitite (deposit (Albyn and Elga) and quartz-veined (Tokur) ores. The isotope age determined by the40Ar/39Ar method makes it possible to distinguish three stages of the formation of mineralization: early – gold-quartz with albitite ores (139–130 million years), middle – gold-sulfide (134–120,7 million years) and late – gold-quartz with quartz-vein ores (122,4–113,6 million years).

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About the authors

Vitaly A. Stepanov

Research Geotechnological Center, FEB RAS

Author for correspondence.
Email: vitstepanov@yandex.ru
ORCID iD: 0000-0002-7028-3662

Doctor of Sciences in Geology and Mineralogy, Professor, Chief Researcher

Russian Federation, Petropavlovsk-Kamchatsky

Anton V. Melnikov

Institute of Geology and Natural Management, FEB RAS

Email: melnikov_anton1972@mail.ru

Candidate of Sciences in Geology and Mineralogy, Leading Researcher

Russian Federation, Blagoveshchensk

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