Инд. авторы:	Obolensky A.A., Gushchina L.V., Anisimova G.S., Serkebaeva E.S., Tomilenko A.A., Gibsher N.A.
Заглавие:	Physicochemical modeling of mineral formation processes at the Badran gold deposit (Yakutia)
Библ. ссылка:	Obolensky A.A., Gushchina L.V., Anisimova G.S., Serkebaeva E.S., Tomilenko A.A., Gibsher N.A. Physicochemical modeling of mineral formation processes at the Badran gold deposit (Yakutia) // Russian Geology and Geophysics. - 2011. - Vol.52. - Iss. 3. - P.290-306. - ISSN 1068-7971. - EISSN 1878-030X.
Внешние системы:	DOI: 10.1016/j.rgg.2011.02.003; SCOPUS: 2-s2.0-79951560209;
Реферат:	eng: The physicochemical modeling of mineral formation processes at the Badran subthrust gold-quartz deposit was performed, based on a study of fluid inclusions in quartz by Raman spectroscopy, gas chromatography, thermometry, and freezing. The results show that at stage I, highly productive gold-bearing quartz veins (gray quartz) of the deposit formed from heterogeneous fluid at <320 oC and 2.0-0.1 kbar with the active participation of CO2, N2, and CH4; the salinity of this solution reached 10 wt.% NaCl-equiv. At stage II (Au-productive), milky-white quartz was produced from the homogeneous medium-chloride-sulfide solution which remained after the heterogenization of the initial fluid, at 300-100 oC and 0.1 kbar. At stage III (with low Au production), clear quartz formed from homogeneous chloride solutions with salinity of <4.5 wt.% NaCl-equiv. at <200 oC and <0.1 kbar. The physicochemical conditions of Au concentration within the complex geochemical system Au-Fe-Cu-Pb-Zn-As-Sb-Hg-Ag-H2O-Cl-H2S-CO2 at the Badran deposit was modeled using the Chiller software. The following models were used: (1) solution-rock interaction and (2) condensation of gas phase (for stage I); (3) simple cooling of medium-chloride-sulfide solution (for stage II); (4) simple cooling and (5) mixing of low-chloride-sulfide solution with acid meteoric waters (for stage III). The models show the sequence of vein formation in the ore-producing system and the host-rock metasomatism in the deep horizons of the deposit. © 2011.
Ключевые слова:	Russian Federation; thermodynamics; Raman spectroscopy; quartz vein; physicochemical property; ore deposit; metasomatism; hydrothermal fluid; Sakha; gold; gas chromatography; freezing; fluid inclusion; Thermodynamic model; Gold deposit; Fluid inclusion; Composition of hydrothermal solution; host rock;
Издано:	2011
Физ. характеристика:	с.290-306