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Abstract. This paper presents the research results of macro and micro components of water composition based on a complex analysis of geochemistry situation in the Rudnaya river basin. The research classifies the principal water geochemical types. It was proved that the chemical composition in the Rudnaya river mid-channel is stipulated by mining technogenesis. The research studies the concentration of rare-earth elements (REE) in water passages, draining industrial facilities, and the Rudnaya River receiving these passages.

This study presents the mineralogical and geochemical characteristics of tailing dumps at the Krasnorechenskaya concentrated mill (Primorye region, Russia). Primary ore minerals and new-forming mineral assemblages were also investigated. According to obtained data the major elements possible reserves accumulated in these tailings were estimated. It is indicated that the tailing dumps at the Krasnorechenskaya concentrated mill is potentially productive for secondary recovery. The tailing sediment has natural geochemical stratification and the specific correlations of elements are typical for each selected layer.

The forms of occurrence and redistribution of silver between the sulfide orestailings and surface waters of the Krasnorechensk tailingsdam of Dalnegorsk District have been studied. Using the Selector-S software complex, physicochemical simulation of oxidation of tetrahedrite-freibergite and silver-containing pyrite was performed, and the mass of annual silver removal by surface runoff from the tailings site was calculated.