Metallogenic Epoch and Ore_bearing Strata Age of the Sawayaerdun Gold_Antimony Deposit in Tianshan Mountains , China
西南天山萨瓦亚尔顿金(锑)矿床成矿时代与赋矿地层时代

Located in the southwestern Tianshan mountains, the Sawayaerdun gold (antimony) deposit is similar to the Muruntau gold deposit of Uzbekstan in metallogenic characteristics. The Rb-Sr isochron age (231±10Ma) of fluid inclusions in quartz from the ores indicates that the metallogenic epoch is Indosinia,consistent with the intracontinental collision stage of the South Tianshan Mountains. According to Rb-Sr isochron age (389±42Ma) of fluid inclusions in quartz from bedding quartz-carbonate veins, the ages of the main ore-bearing strata (2 and 3 sections) are between Silurian and Devonian. However,the two lithologic members above and below the main ore-bearing strata belong to Carboniferous according to fossils.