Genesis of Manganese Ores of the Kvirila Deposit, Georgia: Evidence from Carbon and Oxygen Isotope Composition and Rare Earth Element Geochemistry

The paper reports original data on the isotopic composition (δ 13 С, δ 18 О) and major and rare earth element (REE) geochemistry of manganese ores in the Rodinauli section of the Kvirila deposit (Georgia). The δ 13 С (V-PDB) and δ 18 О (V-SMOW) values vary from –19.6 to –6.6‰ and from 21.1 to 29.1‰,...

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Bibliographic Details
Published in:Lithology and Mineral Resources 2024-04, Vol.59 (2), p.151-167
Main Authors: Kuleshov, V. N., Bychkov, A. Yu, Nikolaeva, I. Yu, Tarnopolskaia, M. E.
Format: Article
Language:English
Subjects:
Carbonates
Catagenesis
Chemical composition
Diagenesis
Earth and Environmental Science
Earth Sciences
Geochemistry
Heavy metals
Isotope composition
Manganese
Manganese ores
Mineral Resources
Mineralogy
Ores
Oxygen isotopes
Rare earth elements
Sedimentology
Sediments
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Summary:The paper reports original data on the isotopic composition (δ 13 С, δ 18 О) and major and rare earth element (REE) geochemistry of manganese ores in the Rodinauli section of the Kvirila deposit (Georgia). The δ 13 С (V-PDB) and δ 18 О (V-SMOW) values vary from –19.6 to –6.6‰ and from 21.1 to 29.1‰, respectively, in the carbonate ores; and from ‒14.9 to ‒5.5‰ and from 21.8 to 28.4‰, respectively, in the carbonate substance of cement of oxide ores. The studied ores are characterized by the presence of negative Ce anomaly ( up to 0.51) in majority of samples (both carbonate and oxide ores); the prominent Eu anomaly is absent. A conclusion has been made that the ores were formed both under conditions of early diagenesis of sediments and later, during catagenesis, with the participation of metal-bearing elisional solutions.
ISSN:0024-4902
1608-3229
1573-8892
DOI:10.1134/S0024490223700463