Chronology, Geochemical Characteristics and the Significance of Shesuo Copper Polymetallic Deposit , Tibet
详细信息
- 责任者：Zhao Yuanyi (Key Laboratory of Metallogeny and Mineral Assessment ; MRL ; Institute of Mineral Resource ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Cui Yubin
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(7)
- 关键词：铜矿 ; copper ores ; 多金属矿 ; polymetallic ores ; 铀—铅计时 ; U-Pb dating ; 西藏 ; Tibet
- 页码：p.2032-2142
- 图表：12 illus., 8 tables, 26 refs.
- 分类号：1001
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
Shesuo deposit is located in the north of Shenzha county, Tibet. It is near the Bangong Lake-Nujiang metallogenic belt, and a small skarn type copper-richen polymetallic deposit. This paper is based on the systemic field geological survey, indoor rock and ore appraisal, zircon LA-ICP-MS U-Pb dating, test of major and trace element, H-O, C, S and Pb isotopes, Raman spectra, temperature and salinity of fluid inclusions, and find out its chronology and geochemical characteristics. All inclusions are gas-liquid two phase inclusions, and the gas phase composition is mainly CO2 and a little with CH4 and N2. The ratio of gas to liquid is between 5% and 45%, and the size is of 3×6~33×20 μm. Uniform temperature ranges from 130 ℃ to 290 ℃, and is mainly 180~260 ℃; and the salinity in mainly 3%~6% NaCleqv and 10%~18% NaCleqv, and overall it shows the low temperature and salinity characteristics. The ore-forming materials are provided by magama and strata together.