Тип публикации: статья из журнала

Год издания: 2026

Идентификатор DOI: 10.1134/S1075701525600744

Ключевые слова: Native Au, Au–Ag tellurides, Au–Mo–Cu porphyry deposits, quartz, fluid inclusions, stable isotopes, tuva

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 CO₂-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 CO₂-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 CO₂-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 }

Журнал: Geology of Ore Deposits

Выпуск журнала: Т.68, №3

Номера страниц: 413-441

ISSN журнала: 10757015

Место издания: Moscow

Издатель: Pleiades Publishing, Ltd.

• Kuzhuget R. V. (Tuvinian Institute for Exploration of Natural Resources, Siberian Branch, Russian Academy of Sciences)
• Ankusheva N. N. (South Urals Federal Research Center of Mineralogy and Geoecology, Ural Branch, Russian Academy of Sciences)
• Losev V. I. (Siberian Federal University)
• Kalinin Yu. A. (Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences)
• Shavekina A. Sh. (Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences)
• Bayir-ool A. V. (Tuva State University)
• Vikentyev I. V. (Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences)

• Ядро РИНЦ (eLIBRARY.RU)