Qimantage-Dulan metallogenic belt is related to the iron copper polymetallic in Qinghai Province， which have rich mineral resources and lower research degree. Shuangqing iron deposit is a typical deposit that has not carry out geochemical research on its fluid inclusions and stable isotopes. The result of temperature measuring of fluid inclusions and the stable isotopes geochemical characteristics show that the fluid properties has changed slightly from magnetite-quartz veins stage to quartz sulfide stage. The range of homogenization temperatures is 213.7℃ to 327.8℃，the salinities of fluid are mainly in ranges between 0.53％ to 6.14％，the density of the fluid vary from 0.703g/cm3to 0.888g/cm3，which shows that homogenization temperatures and the salinities of fluid have reduced to a certain extent during the mineralization. The δ18OV-SMOW of the magnetite vary from 4.4‰ to 10.8‰ indicate the mineral of magnetite comes from the mantle. The δ34SV-CDT of the hydrothermal sulfide vary from 0.9‰ to -0.1‰，the average is 0.4‰，and the meteorite sulfur characteristics of the mineral of hydrothermal sulfide reflected the characteristics of igneous source or deep origins of the sulfur. The δ13CV-PDB of the hydrothermal calcite vary from -6.3‰ to -5.2‰ indicate its carbon from deep origins granitic magma，combining with the δ18OV-SMOW vary from -33.8‰to -18.3‰，the carbonoxygen isotope results indicate that carbon mainly from granite magma and affected significantly by the latter atmospheric precipitation. The results of the quartz δD-δ18OH2O shows that the early stage of the Shuangqing deposit are mainly coming from magmatic hydrothermal fluid， and the meteoric water added during the late stage， which leads oreforming fluid of magmatic water mixed with meteoric water flow.
Chen Cuihua,He Chaoxin,Li Youguo et al. Geochemical characteristics of fluid inclusions and stable isotopes of the Shuangqing iron deposit in Dulan，Qinghai Province[J]. Chinese Journal of Geology, 2016, 51(4): 1204-1222.