HYDROGENIC CONCENTRATION OF GOLD IN ALLUVIAL PLACERS OF THE EGOR'EVSKOE AREA ( Salair )
E.M. Dutova, M.B. Bukaty*, A.I. Nevol'ko**, D.S. Pokrovsky***, and S.L. Shvartsev*
Tomsk Polytechnic University, 30 prosp. Lenina, Tomsk, 634034, Russia
* Tomsk Branch of the Institute of Petroleum Geology, Siberian Branch of the RAS,
3 Akademichesky prosp., Tomsk, 634055, Russia
** Regional Resources Agency of the Siberian Federal District,
35 Krasny prosp. 35 Novosibirsk, 630099, Russia
*** Tomsk State Architectural and Building University, 2 Solyanaya ploshch., Tomsk, 634003, Russia
Keywords: Groundwaters, geochemistry, gold, mobilization, form of migration, deposition
Pages: 364-377
Abstract
Based on results of studying the geochemistry and gold distribution of groundwaters in the Egor'evskoe gold-bearing area, a mechanism of gold mobilization, migration, and accumulation in mountain-forest landscape is proposed. Gold mass transfer is part of an ore-generating process running in a water-rock system. Hydrogenic concentration of gold in placers is equally determined by physicochemical processes of secondary mineral formation and hydrodynamic conditions. The amounts of accumulated gold depend on the gold-producing capacity and volume of waters involved in the mineral formation and on the duration of this process.
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