| 西南天山布隆金矿床成矿作用同位素地质年代学 |
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| 关键词:quartz-barite vein-type gold deposit isotopic geochronology for mineralization Bulong southwestern Tianshan Mountains Xinjiang |
| 基金项目:中国地质调查局基金项目“西南天山矿产资源潜力综合评价”(编号:199910200249) |
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| Isotopic Geochronology of Minerogenesis of the Bulong Gold Deposit in Southwestern Tianshan Mountains |
| The Bulong gold deposit, located in the southwestern Tianshan Mountains, Xinjiang Uygur Autonomous Region, is a rare epithermal quartz-barite vein-type gold deposit in China. It occurs in Devonian fine clastic rocks and is controlled by fractures zones. According to the mineral assemblages and intercalated relationship, minerogenesis of protogene mineralization phase can be divided into: ① pyrite-quartz stage; ② quartz-pyrite-siderite-barite stage; ③ calcite-quartz-barite stage; ④ barite stage. Chronology study showed that the Rb-Sr isochron age of auriferous quartz of the main mineral stage(②) is 258±15 Ma and the minerogenesis happened between Late Permian epoch and Early Triassic epoch. So it is in accordance with the tremendous minerogenesis of South Tianshan Mountains in Central Asia. |
| YANG Jian-guo,YANG Lin-hai,LÜ Chang-guo,LI Zhi-pei,YU Pu-sheng.2006.Isotopic Geochronology of Minerogenesis of the Bulong Gold Deposit in Southwestern Tianshan Mountains[J].Acta Geoscientica Sinica,27(1):51-55. |
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