Библиографическое описание:Kyzyk-Chadr Au–Mo–Cu Porphyry Deposit (Eastern Tuva, Russia): Noble-Metal Mineralization, <i>PT</i>-Parameters and Ore-Bearing Fluid Composition : научное издание / R. V. Kuzhuget [et al.]. - Текст : непосредственный // Geology of Ore Deposits. - 2026. - Т.68, №3. - P. 413-441. - This research was supported by the Russian Science Foundation (project no. 23-27-00344, https://rscf.ru/project/23-27-00344/). - ISSN 1075-7015. - ISSN 1555-6476, DOI 10.1134/S1075701525600744.
Аннотация:We determined seven mineral assemblages for the Kyzyk-Chadr Au–Mo–Cu porphyry deposit. Early mineral assemblages are composed of chalcopyrite, molybdenite, pyrite and other simple sulfides forming intergrowths gold and electrum. The late assemblages are represented by chalcopyrite, tennantite-tetrahedrite fahlores (Ag up to 4.4 wt %), gold, electrum, Hg-electrum, Hg-kustelite, tellurides and Au and Ag selenides. The fluid inclusions study (microthermometry and Raman spectroscopy) and mineral thermo-metry (Au and Ag telluride paragenesis) showed that the formation of early mineral assemblages occurred at <i>P</i> ~1.1 kbar (~3 km) from CO<sub>2</sub>-water-chloride (Na–K) fluid: pyrite-chalcopyrite-molybdenite-quartz assemblage from the fluid with salinity of 35.1–36.2 wt % NaCl eq. due to decreasing temperatures from 457 to 441°C; gold-polysulfide-quartz from the fluid with salinity of 5.4–14.9 wt % NaCl eq at 442–321°C. The gold-sulfide-quartz assemblage of vein-disseminated ores was formed at <i>P</i> ≈ 0.5–0.75 kbar (≈1.5–2.3 km) from CO<sub>2</sub>-water-chloride (Na–K) fluid with salinity of 3.4–10.2 w t% NaCl-eq due to decreasing temperatures from 360 to 230°C. The formation of gold-sulfide-quartz assemblage was from water-chloride and CO<sub>2</sub>-water-chloride (Na–K) fluid with salinity of 3.1–11.2 wt % NaCl-eq. due to decreasing temperatures from 295 to 227 °C. The ${{\delta }
Держатель оригинала документа:Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences, Siberian Federal University, Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, South Urals Federal Research Center of Mineralogy and Geoecology, Ural Branch, Russian Academy of Sciences, Tuva State University, Tuvinian Institute for Exploration of Natural Resources, Siberian Branch, Russian Academy of Sciences
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