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The Dongping gold deposit is contained within an inner contacting zone of the Her-cynian Shuiquangou alkali syenite. The ores occur as veins or as replacement bodies. Fluid inclusion observation shows that in early and main mineralizing stages inclusion types are gas and gas-liquid inclusions, respectively. Gas inclusions occur in isolation in vein quartz, their homog-enization temperature is 372-306℃, and salinity 3.7-1.0 wt% NaCI. Gas-liquid inclusions occur in clusters or healed fractures but do not cut quartz boundary with homogenization temperature 342-267℃ and salinity 1.90.8 wt% NaCI. Stable isotope measurements show that at main gold mineralization, hydrogen and oxygen isotopic ratios of the mineralizing fluids are -70.8‰--108.4‰ and 2.44‰-4.05‰, respectively. Primary ore fluids in Dongping are higher temperature and lower salinity NaCI-CO2-H2O fluids, and come from Yanshanian granitic magmatism. Fluid immiscibility, fluid-rock interactions and meteoric water adding were main reasons for go
The Dongping gold deposit is contained within an inner contacting zone of the Her-cynian Shuiquangou alkali syenite. The ores occur as veins or as replacement bodies. Fluid inclusion observations shows that in early and main mineralizing stages inclusions are gas and gas-liquid inclusions , respectively. Gas inclusions occur in isolation in vein quartz, their homog-en temperature is 372-306 ° C, and salinity 3.7-1.0 wt% NaCI. Gas-liquid inclusions occur in clusters or healed fractures but do not cut quartz boundary with homogenization Stable isotope measurements show that at main gold mineralization, hydrogen and oxygen isotopic ratios of the mineralizing fluids are -70.8 ‰ - 108.4 ‰ and 2.44 ‰ -4.05 ‰, respectively. Primary ore fluids in Dongping are higher temperature and lower salinity NaCI-CO2-H2O fluids, and come from Yanshanian granitic magmatism. Fluid immiscibility, fluid-rock interactions and meteoric water adding were main reasons for go