Abstract
The issues of metallogenetic modeling of ore-forming systems for search purposes when studying sides and deep horizons of the mined deposits are considered. The object of the study is the geological and geochemical conditions of ore accumulation of various mineral composition and the concentration of useful components in various sections of the Talnakh ore-forming system. Mineral and geochemical zoning of the deposits reflect the degree of contamination of primary silicate and magmatic melts with crustal material. On the western and southern sides of the ore-forming system, ore mineralization is represented by low-sulfur associations of chalcopyrite minerals and is specialized in Cu–Ni–Co. The geochemical analysis of isotopes δ34S, 40Ar/36Ar, δ65Cu, 87Sr/86Sr suggests that the process of ore formation on the sides of the Talnakh ore cluster occurs under intense influence of the crust (sulfur source evaporite rocks) and near-surface water on the fluid in melting-fractionated sulphide magma enriched with copper, which results in the formation of chalcopyrite ore.
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