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Regional Geology and Metallogeny
Journal Contents
2019
77

N.V. SHATOVA, А.V. МOLCHANOV, А.V. ТЕREKHOV, V.V. SHATOV, O.V. PETROV, S.A. SERGEEV, EH.M. PRASOLOV (VSEGEI), G.P. DVORNIK (IGG UB RAS), V.I. LEONTEV (VSEGEI, SPMU)

Ryabinovoe copper-gold-porphyry deposit (Southern Yakutia): geology, noble gases isotope systematics and isotopic (U-Pb, Rb-Sr, Re-Os) dating of wallrock alteration and ore-forming processes

In the Ryabinovoe copper-gold-porphyry deposit, the ore mineralization is belonging to multi-stage metasomatism fields, which were formed in two stages. In the first, pre-ore stage, high-temperature potassium-sodium metasomatites – aegirine feldspathites – were appeared whereas gumbeites – in the second, low/medium-temperature stage as a both – carbonate-sericite-muscovite-orthoclase and quartz-carbonate-barite-adular varieties. The results of isotopic investigations (U-Pb, Rb-Sr, Re-Os, 40Ar/36Ar, 3He/4He, 20Ne) of the above-mentioned metasomatites and ore mineralization are discussed in the paper.
Keywords: isotopic geochemistry of noble gases, geochronology, wallrock alteration, ore-forming processes, Ryabinovoe Cu-Au-porphyry deposit, Southern Yakutia.


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