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Distribution patterns of indium in ores from polymetallic and tin-polymetallic deposits of Eastern Transbaikalia, Russia

https://doi.org/10.24930/1681-9004-2026-26-2-434-448

EDN: LLUHBL

Abstract

Research subject. The content of indium in the main mineral associations of tin-polymetallic and polymetallic lead–zinc deposits in Eastern Transbaikalia. Materials and methods. To determine the chemical composition of ore minerals, including indium content in polished sections, samples of sulfide ores containing indium were analyzed using ICP–MS, as well as polarization and electron microscopy. Results and conclusions. Indium content was found to be highly variable both among deposits and mineral assemblages, as well as within individual samples. The average indium content in the studied mineral associations of ores comprises (g/t): tin-polymetallic (Sherlovogorskoye, 244.5, and Khapcheranginskoye, 196.4, average – 234.97 with σ = 238.4) and lead-zinc polymetallic in ascending order of concentrations (Mikhaylovskoye, 71.68; Akatuyevskoe, 87.93; Vozdvizhenskoe, 149.43; Blagodatskoye, 225.4; Noyon-Tologoy, 287.43, average 186.42 with σ = 155.1). The highest average content of indium was detected in tin-polymetallic deposits. The average content across all 32 samples was 200.12 g/t with σ = 183.75. The main carrier of indium was found to be sphalerite, containing up to 0.53 wt % of indium in individual samples of tin-polymetallic deposits and up to 2.06 wt % in individual samples of the Blagodatskoye deposit. The entry of indium into the structure of sphalerite tends to correlate with the characteristics of iron content, and, consequently, with the ratio of zinc to iron; however, its maximum concentrations were observed in the low-iron sphalerite of the Blagodatskoye deposit. The conducted research confirmed and clarified the existing data obtained from the exploration of polymetallic and tin-polymetallic deposits in Eastern Transbaikalia.

About the Authors

G. A. Yurgenson
Institute of Natural Resources, Ecology and Cryology, SB RAS
Russian Federation

16a Nedorozov st., Chita 672014



B. N. Abramov
Institute of Natural Resources, Ecology and Cryology, SB RAS
Russian Federation

16a Nedorozov st., Chita 672014



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For citations:


Yurgenson G.A., Abramov B.N. Distribution patterns of indium in ores from polymetallic and tin-polymetallic deposits of Eastern Transbaikalia, Russia. LITHOSPHERE (Russia). 2026;26(2):434–448. (In Russ.) https://doi.org/10.24930/1681-9004-2026-26-2-434-448. EDN: LLUHBL

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