Geology and Geochemistry of the Simaoling Gold Deposit in the Fengtai Ore Concentration Area，Western Qinling，Central China
详细信息
- 责任者：Li Xia (Faculty of Geosciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Wang Yitian
- 刊名：Acta Petrologica Sinica
- 出版年：2010
- 卷期：26(3)
- 关键词：金矿 ; gold ores
- 页码：p.717-728
- 图表：11 illus., 3 tables, 27 refs.
- 分类号：1001
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
The gold mineralization could be divided into three stages：the early quartz-sericite-sulfide stage，the middle polymetallic sulfide stage，and the late carbonation stage．Studies on fluid inclusions of the early and the middle stages show that the ore-forming fluids belong to the low salinity CO2-H2O system with intermediate temperature．In the metallogenetic stage, temperature, pressure and salinity of fluids are lower, and the sulfur fugacity is higher, which are in favor of gold precipitation．By contrast with the Baguamiao gold deposit, H, O, S, and C isotope studies indicate that ore-forming fluids of both deposits are derived from the same deep source，and finally mixed with shallow fluids．