Ferromanganese Crusts from Submarine Volcanoes of Backarc Basins as a New Genetic Type of Gallium Deposits

摘要

Study of the material composition of Fe—Mn crusts from submarine rises in the central part of the Sea of Japan, with modern precision methods applied, has yielded a high (up to 854 g/t) concentration of gallium contained in sorbed form. The new data obtained have allowed a new genetic type of gallium deposits— hydrothermal-sedimentary—to be distinguished.