ИЗУЧЕНИЕ СОСТАВА ФЛЮИДНЫХ ВКЛЮЧЕНИЙ В КВАРЦЕВЫХ ЖИЛАХ КЫЗЫЛАЛМАСАЙСКОГО МЕСТОРОЖДЕНИЯ (УЧАСТОК САМАРЧУК)

The article investigates the composition, phase state, and thermobarogeochemical characteristics of fluid inclusions hosted by mineralized quartz veins in the Samarchuk area of the Kyzylalmasay deposit, Chatkal–Kurama region. The study employed a JEOL JXA-8200 electron probe microanalyzer, a THMSG–600 microthermometric stage, and FLINCOR software. Fluid inclusions in quartz are predominantly represented by two-phase gas–liquid inclusions containing aqueous–saline solutions. Microthermometric measurements indicate homogenization temperatures of 368–120 °C, salinities ranging from 15.0 to 0.2 wt.% NaCl equivalent, and fluid densities of 0.55–1.04 g/cm³. The ore-forming fluids contain Na, Mg, and K chlorides as well as HCO₃⁻, SO₄²⁻, Cl⁻, CO₂, and CH₄. Hydrothermal fluids of the Samarchuk area are characterized by medium- to low-temperature formation conditions and relatively low salinity, consistent with fluids typical of epithermal deposits. Mineralogical studies identified pyrite, chalcopyrite, galena, sphalerite, native bismuth, cobaltite, stützite, barite, and apatite. The obtained results are important for understanding the formation conditions of gold–silver mineralization and assessing the mineral potential of the Samarchuk area.

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