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Mineralogical and Geochemical Features of Native Gold in Combustion Products of Coal from the Erkovetsky Deposit (Upper Amur Region)

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Abstract

A bulk coal sample from the Erkovetsky deposit is studied at Amur experimental and engineering facility. Separate fractions of coal combustion products (slag, fly ash, and sludge) are obtained for the first time, in which the morphology, fineness of gold and composition of inclusions have been studied. A consistent decrease in gold size and content is determined after coal combustion, transportation in a gas-smoke stream, and subsequent condensation. A comparative analysis of gold in the combustion products of coal and in ore bodies of the mountain-folded framing of the Zeya-Bureya basin is carried out, the ways of gold migration to peat bogs are considered.

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Acknowledgments

The authors are grateful to V.O. Krutikova (ITG, FEB RAS, Khabarovsk) for performing analytical work on determining the chemical composition of native gold and E.N. Voropaeva (IGNM, FEB RAS, Blagoveshchensk) for the mineralogical analysis of samples. The authors also express their gratitude to L.A. Chursina and S.B. Turmora (AmurSC, FEB RAS, Blagoveshchensk) for determining the gold content in coals and combustion products.

Funding

The work was supported by the Far East Program, project no. 18-02-019: Geological and technological assessment of the resource potential of caustobioliths of the Far Eastern coal series, the development of scientific foundations of their comprehensive use and obtaining competitive multipurpose products.

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Authors and Affiliations

  1. Institute of Geology and Nature Management, Far East Branch, Russian Academy of Sciences, Blagoveshchensk, 675000, Russia

    A. P. Sorokin

  2. Amur Science Center, Far East Branch, Russian Academy of Sciences, Blagoveshchensk, 675000, Russia

    A. A. Konyushok, O. A. Ageev & V. M. Kuz’minykh

Authors
  1. A. P. Sorokin
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  2. A. A. Konyushok
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  3. O. A. Ageev
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  4. V. M. Kuz’minykh
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Corresponding authors

Correspondence to A. P. Sorokin or A. A. Konyushok.

Additional information

Original Russian Text © The Author(s), 2019, published in Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2019, No. 4, pp. 141–150.

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Sorokin, A.P., Konyushok, A.A., Ageev, O.A. et al. Mineralogical and Geochemical Features of Native Gold in Combustion Products of Coal from the Erkovetsky Deposit (Upper Amur Region). J Min Sci 55, 643–651 (2019). https://doi.org/10.1134/S1062739119045990

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  • DOI: https://doi.org/10.1134/S1062739119045990

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