Abstract
Abstract —We consider the distribution of trace elements and precious metals in sulfides and native gold of the Olimpiada deposit. Analysis of the obtained data provided conclusions about the source of ore substance and the parameters of the ore-forming fluid. We think that the deposit was formed by a medium- to high-temperature fluid with variable salinity and acidity/alkalinity, with chloride complexes dominating. The redox potential changed in the course of ore formation, but the ore mineralization formed under reducing conditions. The early Au–As mineralization might have formed with the major participation of crustal substance, but the supply of substance from another, probably deep-seated, source was also possible. The Au–Sb paragenesis differs significantly in REE and precious-metal (primarily PGE) distribution, which might indicate a different source of substance (with a higher portion of a deep-seated component) during the formation of such parageneses. The Au/Ag ratios in sulfides, gold, and ores of the Olimpiada deposit point to the presence of Au and Ag sulfide minerals.
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