TYPES OF GOLD-MERCURY DEPOSITS AND THEIR FORMATION CONDITIONS
A.S. Borisenko, E.A. Naumov, and A.A. Obolensky
Institute of Geology, Siberian Branch of the RAS, 3 prosp. Akad. Koptyuga,
Novosibirsk, 630090, Russia
Keywords: Gold-mercury deposits, ore associations, classification, genesis, age
Pages: 342-354
Abstract
Gold-mercury deposits in Central Asia form a heterogeneous group of gold orebodies spatially and genetically related to different types of endogenous mineralization (ore deposit complexes). Four types of gold-mercury mineralization have been recognized: Au-As-Hg, Au-Sb-Hg, Au-Te-Hg, and Au-Cu-Hg. They are the products of different ore-magmatic systems, formed at their subsurface levels. The classification of these gold-mercury deposits is based on the specific mineral and geochemical compositions of their ores, including the content of Hg in native gold, relationship with different complexes of accessory endogenous mineralization, and physicochemical conditions of their formation.
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