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Geochemistry of Rock-Forming and Rare Earth Elements in the Kaa-Khem Coal Deposit

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Abstract

The distribution of ash-forming elements and rare earth elements (REEs) in the 2.2-Ulug coal seam and in the coal-bearing rocks of the Kaa-Khem deposit is considered. It was found that ash in unoxidized and semi-oxidized coals was ferruginous–calcium–siliceous and hydrolyzate, HMav = 1.40, and alumina–siliceous siallitic, HMav = 0.49, in oxidized coals. The carbonate composition of the intraformational coal bed was revealed. It was shown that intrusive associations of the Kaa-Khem granitoid batholith were the source of the drift of fragmentary material from the coal-bearing strata.

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Funding

This work was carried out within the framework of a state contract at the Tuvinian Institute for Complex Exploration of Natural Resources, Siberian Branch, Russian Academy of Sciences and funded by the Ministry of Science and Higher Education of the Russian Federation (project no. AAAA-A17-117072710020-4).

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Authors and Affiliations

  1. Tuvinian Institute for Complex Exploration of Natural Resources, Siberian Branch, Russian Academy of Sciences, 667007, Kyzyl, Russia

    N. N. Yanchat & L. Kh. Tas-ool

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  1. N. N. Yanchat
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  2. L. Kh. Tas-ool
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Correspondence to N. N. Yanchat or L. Kh. Tas-ool.

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Translated by V. Makhlyarchuk

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Yanchat, N.N., Tas-ool, L.K. Geochemistry of Rock-Forming and Rare Earth Elements in the Kaa-Khem Coal Deposit. Solid Fuel Chem. 55, 26–36 (2021). https://doi.org/10.3103/S0361521921010092

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  • DOI: https://doi.org/10.3103/S0361521921010092

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