TY - JOUR

T1 - Cianuros, arsénico y metales nobles en relaves de cianuración de minerales de oro y aguas superficiales en una región de permafrost (Territorio de Transbaikal, Rusia)

AU - Yurkevich, Nataliya

AU - Olenchenko, Vladimir

AU - Bortnikova, Svetlana

AU - Saeva, Olga

AU - Korneeva, Tatyana

N1 - Funding Information: This work was supported by the Russian Foundation for Basic Research, Grant 20-05-00336 (laboratory investigations, calculations, visualisation) and Russian Science Foundation, Grant 19-17-00134 (interpretation, conceptualisation). Publisher Copyright: © 2021, Springer-Verlag GmbH Germany, part of Springer Nature.

PY - 2021/12

Y1 - 2021/12

N2 - Geochemical and geophysical investigations were performed in an area of the Darasun ore cyanidation tailings impoundment, which is located in a permafrost region. The tailings contain up to 40 wt% pyrite and 5.7 wt% arsenopyrite. The purpose of this work was to determine the composition and mechanisms of transformation of the tailings and species of As, Au, Ag, Be, and Tl in drainage waters and the Darasun River before and after mixing with technogenic flows from the mining area. When the waste is oxidized because of the repeated seasonal freezing and thawing of water, three groups of chemical elements are leached: typical ore metals and impurity elements (Pb–Co–Ni–Zn–Cd and Fe–Al–Tl–Be–In), noble metals, metalloids (Au–Ag–Cu–As–Sb–Se), and post-transition metals and metalloids (Bi–Sn–Te). Drainage waters with salinities up to 5 g/L form, with concentrations of sulfate ions up to 2 g/L and cyanide up to 4 g/L, high concentrations of Au (up to 130 µg/L), Ag (3.8 µg/L), As (up to 350 µg/L), and Sb (up to 1100 µg/L), and impurity elements (Tl, In, Be, and Bi). The drainage water flows into the Darasun River, resulting in hydrochemical anomalies tens of kilometers downstream.

AB - Geochemical and geophysical investigations were performed in an area of the Darasun ore cyanidation tailings impoundment, which is located in a permafrost region. The tailings contain up to 40 wt% pyrite and 5.7 wt% arsenopyrite. The purpose of this work was to determine the composition and mechanisms of transformation of the tailings and species of As, Au, Ag, Be, and Tl in drainage waters and the Darasun River before and after mixing with technogenic flows from the mining area. When the waste is oxidized because of the repeated seasonal freezing and thawing of water, three groups of chemical elements are leached: typical ore metals and impurity elements (Pb–Co–Ni–Zn–Cd and Fe–Al–Tl–Be–In), noble metals, metalloids (Au–Ag–Cu–As–Sb–Se), and post-transition metals and metalloids (Bi–Sn–Te). Drainage waters with salinities up to 5 g/L form, with concentrations of sulfate ions up to 2 g/L and cyanide up to 4 g/L, high concentrations of Au (up to 130 µg/L), Ag (3.8 µg/L), As (up to 350 µg/L), and Sb (up to 1100 µg/L), and impurity elements (Tl, In, Be, and Bi). The drainage water flows into the Darasun River, resulting in hydrochemical anomalies tens of kilometers downstream.

KW - Mine tailings

KW - Electrical resistivity tomography

KW - Cryogenic leaching

KW - Drainage

KW - Mobility

KW - Geochemical barrier

KW - ELECTRICAL-RESISTIVITY TOMOGRAPHY

KW - MINE TAILINGS

KW - WASTES

KW - DRAINAGE

KW - KEMEROVO

KW - DYNAMICS

KW - CLIMATE

KW - STREAMS

KW - IMPACT

KW - SILVER

UR - http://www.scopus.com/inward/record.url?scp=85115373993&partnerID=8YFLogxK

U2 - 10.1007/s10230-021-00828-5

DO - 10.1007/s10230-021-00828-5

M3 - статья

VL - 40

SP - 943

EP - 955

JO - Mine water and the environment

JF - Mine water and the environment

SN - 1025-9112

IS - 4

ER -