Study on the Mineral Electron Microprobe Evidence of the Formation Conditions and Fission Track of Gold Deposits in Ganzi-Litang Gold Belt, oft-com:office:smarttags" />Western Sichuan Provinceoft-com:office:office" />

详细信息   

• 责任者：Huan Weijing (State Key Laboratory of Geological Processes and Mineral Resources ; School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Yuan Wanming
• 刊名：Geoscience
• 出版年：2011
• 卷期：25(2)
• 关键词：金矿 ; gold ores ; 四川 ; Sichuan Province
• 页码：p.261-270
• 图表：4 illus., 2 tables, 35 refs.
• 分类号：1001
• issnNo：ISSN1000-8527
• isbnNo：CN11-2035/P

摘要

 Ganzi-Litang gold belt is located in the Eastern Qinghai-Tibetan Plateau, the junction area of Songpan-Ganzi orogenic zones and Yidun arc orogen. The authors attempt to explore the ore-formating temperature, depth and environments of the five gold deposits, i.e., Gala gold ore district, Cuo’a gold ore district, Xionglongxi gold ore district, Ajialongwa gold ore district and Qukailongwa gold ore district, using electron microprobe analysis of the main gold-bearing minerals of pyrite and arsenopyrite. The mineralizing age is discussed based on the fission track age of zircon in the ore. The authors consider that the gold deposits formed in the condition of higher oxygen fugacity, middle-shallow depths and middle-low temperature hydrotherm of 165~250 ℃.