Coprecipitation of manganese, copper, zinc, lead, and cadmium with iron hydroxide in hydrothermal plumes - (By the data of laboratory modeling)

The process of coprecipitation of manganese, copper, zinc, lead, and cadmiu m with iron (III) hydroxide formed in submarine hydrothermal plumes during the oxidation of dissolved bivalent iron is studied experimentally. The exp erimentally found efficiency of the coprecipitation of microelements corres ponds to the data on the composition of the suspended matter in submarine h ydrothermal plumes. Copper, lead, zinc, and cadmium in metalliferous sedime nts are shown to be bound to volcanogenic iron hydroxide. Manganese copreci pitation with iron hydroxide is of secondary importance as compared to the formation of solid phases of manganese dioxide produced biochemically by mi croorganisms.