Characteristics of Fluid Inclusions in Jiama Copper-Pollymetallic Ore Deposit ,Tibet
详细信息
- 责任者：Li Yongsheng (Faculty of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Zhao Caisheng
- 刊名：Journal of Jilin University
- 出版年：2011
- 卷期：41(1)
- 关键词：铜矿 ; copper ores ; 多金属矿 ; polymetallic ores ; 流体包裹体 ; fluid inclusions ; 西藏 ; Tibet
- 页码：p.122-136
- 图表：10 illus., 2 tables, 36 refs.
- 分类号：1001
- issnNo：ISSN1671-5888
- isbnNo：CN22-1343/P
摘要
The recently discovered Jiama super large copper-polymetallic deposit is located in the middle section of Gangdese metallogenic belt, Tibet. Systematic studies including petrography, microthermometry, laser Raman microprobe and SEM/EDS were carried out on the primary fluid inclusions in metallogentic granite and major ore bodies. The analytical results show that dominant fluid inclusions from skarn ore related to metallogensis include liquid-rich, gas-rich two-phase and daughter-minerals bearing polyphase types. Based on estimation of mineralization pressure and the relationship between pressure and depth in fracture zones, the mineralization depth is considered to be at 2.2~8.3 km. The analytical results of hydrogen and oxygen isotopic elements show that ore-forming fluids are mainly derived from magmatic water mixed with meteoric water later.
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