The Shuangquan gold deposit in space prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />Qitai County, Xinjiang, is located in east Junggar, which belongs to the Karamaili-Mo-qinwula mineralization belt (Ⅳ-grade metallogenic belt) of the Karamaili-Daerbute gold metallogenic belt(Ⅲ-grade metallogenic belt). In this paper, the laser microprobe 40Ar/39Ar isotopic dating was carried out on the alteration minerals of sericite and gold-bear-ing quartz veins in the Shuangquan gold deposit. The isochronic ages of three sericite samples are 269 Ma±9 Ma, 265 Ma±2 Ma and 260 Ma±4 Ma. A quartz sample returns an isochron age of 269Ma±8Ma. These results suggest that the main mineralization age of the Shuangquan gold deposit varies between 269 Ma±9 Ma and 260 Ma±4 Ma. spacerun: yes"> space prefix = o ns = "urn:schemas-microsoft-com:office:office" />
