Siberian Federal University

The composition and structure of rare metal ores Chuktukon deposit was studied. The predominant part of the ore was presented by the products of final hydrolysis, which is dominated by oxides and hydroxides of iron and manganese. Rare earth metals in the ores are presented in the form of phosphates (Florencite and monazite), and niobium – secondary strontium, barium and cerium pyrochlores. Ore minerals are characterized by exceptional fineness and their mutual splicedity. The size of the particles that make up the globules of ore is the tens of nanometers. Minerals of rare metals are covered by oxides and hydroxides films of iron. This mainly refers to the REM than niobium. For individual samples of ore assay near 70 % of monazite is closed by oxide-hydroxide form of iron, which does not allow distinguish REM in the non-magnetic concentrate or conduct selective autoclave opening of monazite by nitric acid. Accordingly, the processing of ores by hydrometallurgical methods requires dispersing of ores almost to the colloidal state