Обобщен материал по золотоносности разновозрастных осадочных комплексов Украинского щита. Установлено временное, пространственное и литофациальное распределение золота в осадочных комплексах. Выявлены особенности гранулометрии, морфологии, внутреннего строения и химического состава минерала, на базе которых создана его морфологическая классификация.

For the first time, two geochemical types (normal potassium and anomalous sodium) have been singled out among carbonaceous-terrigenous sequences containing the biggest gold ore deposits in Russia. The gold-sulfide picked-streak ore deposits prevail in potassium rocks, but the gold-quartz veins and stockworks dominate in sodium rocks. It has been shown that the alkalinity type of paraschists reflects the peculiarities of the tectonical evolution of sedimentary basins and the diagenesis and metagenesis of sediments. The further evidences of the zonal metamorphism and other endogenic ore-generating processes lead to the gold mineralization of sedimentary-diagenetic sulfide barriers in potassium schists and in alpine quartz veins and their accumulation in sodium sequences.

The role of electrochemical reactions for lead sulphide oxidation by Thiobacillus has been investigated. Efficiency of the microbial oxidation method for galena oxidation in complex gold-lead ores is established. The offered method may be recommended as a pre-treatment operation before the concentrate smelting and the gold extraction.