Email this article The multi-isotope composition of sulfur in sulfides and microfossils of the Mesoarchean Leksa pyrite ore occurrence of the Karelian Craton: new data on abiogenic and biogenic effects on the formation of ancient ores
- Authors: Vysotskii S.V.1, Khanchuk A.I.1, Kuleshevich L.V.2, Ignat’iev A.V.1, Slabunov A.I.2, Velivetskaya T.A.1
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Affiliations:
- Far East Geological Institute, Far East Branch, Russian Academy of Sciences
- Institute of Geology of the Karelian Research Centre of the Russian Academy of Sciences
- Issue: Vol 485, No 5 (2019)
- Pages: 599-603
- Section: Geochemistry
- URL: https://journals.eco-vector.com/0869-5652/article/view/14306
- DOI: https://doi.org/10.31857/S0869-56524855599-603
- ID: 14306
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Abstract
The first data on the multi-isotopic composition of sulfur of sulphides and fossilized microorganisms, first discovered in Mesoarchean (about 2.9 billion years) SCM of the Karelian Craton, are given. As a result of detailed electron-microscopic and microprobe studies, the presence of several varieties of suspected microfossils - silicate cocoids, pyrite-marcasitic spheroids, and hollow tubes - was found in sedimentary rocks of the Lex’s ore occurrence. It is shown that the isotopic composition of sulfur correlates with the typomorphic features of sulfides, their composition and indicates a significant participation of sedimentary sulfur in pyrite ore formation. The process of deposition of iron sulfide occurred with active biological participation.
About the authors
S. V. Vysotskii
Far East Geological Institute, Far East Branch, Russian Academy of Sciences
Author for correspondence.
Email: vysotskiy@fegdi.ru
Russian Federation, 159, 100-letya avenue, Vladivostok, 690022
A. I. Khanchuk
Far East Geological Institute, Far East Branch, Russian Academy of Sciences
Email: vysotskiy@fegdi.ru
Academician of the Russian Academy of Sciences
Russian Federation, 159, 100-letya avenue, Vladivostok, 690022L. V. Kuleshevich
Institute of Geology of the Karelian Research Centre of the Russian Academy of Sciences
Email: vysotskiy@fegdi.ru
Russian Federation, 11, Poushkinskaya street, Petrozavodsk, Karelia, 185910
A. V. Ignat’iev
Far East Geological Institute, Far East Branch, Russian Academy of Sciences
Email: vysotskiy@fegdi.ru
Russian Federation, 159, 100-letya avenue, Vladivostok, 690022
A. I. Slabunov
Institute of Geology of the Karelian Research Centre of the Russian Academy of Sciences
Email: vysotskiy@fegdi.ru
Russian Federation, 11, Poushkinskaya street, Petrozavodsk, Karelia, 185910
T. A. Velivetskaya
Far East Geological Institute, Far East Branch, Russian Academy of Sciences
Email: vysotskiy@fegdi.ru
Russian Federation, 159, 100-letya avenue, Vladivostok, 690022
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