Abstract
The gold-sulfide impregnated deposits occupy one of the leading positions in terms of gold reserves, both in Russia and in the world. The article presents the results of a study of Co-Ni mineralization at the Albazino gold ore deposit (Khabarovsk Krai, the Mongol-Okhotsk orogenic belt). Arsenides of Co, Ni, Fe are represented by arsenopyrite, alloclasite, glaucodot, while the ones of Co and Fe are represented by cobaltite and gersdorffite. Typomorphic features of this group of minerals of the association are: the presence of increased concentrations of nickel (for example, in alloclasite, glaucodote, and cobaltin), Co (arsenopyrite, gersdorfite), Sb (arsenopyrite, gersdorfite, cobaltine), Se (galena), As (pyrite), and Fe (sphalerite). Gold is mainly finely - dispersed and, belongs to low fine one (with Au – 74–76 wt%, Ag 26–24 wt%) in terms of its chemical composition. The revealed typomorphic features of the material composition of ores and the geological structure of the deposit allows attributing this object to the gold-sulfide impregnated type.
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