- 责任者：Liang Yeheng (School of Marine Sciences ; Sun Yat-Sen University ; Guangzhou 510006 ; China) ; Sun Xiaoming
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(9)
- 关键词：金矿 ; gold ores ; 成矿流体 ; ore-forming fluids ; 矿床地球化学 ; mineral deposit geochemistry ; 哀牢山 ; Ailao Mountains
- 页码：p.2533-2540
- 图表：4 illus., 2 tables, 24 refs.
- 分类号：1001
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
Ailaoshan gold deposit belt formed during Himalayan orogenisis in Yunnan Province is one of the most important gold deposits belts in China, within which the Laowangzhai gold deposit is the biggest one. Fluid inclusion microthermometry, Laser Raman analysis and carbon, hydrogen and oxygen isotope measurements are carried out in fluid inclusions of auriferous quartz veins from Laowangzhai gold deposits. The fluid inclusions are mainly NaCl-H2O and CO2-H2O types. Microthermometric measurements show that the homogenization temperatures range from 102 ℃ to 302 ℃, with peak values of 160~180 ℃, the salinities are 2.5% NaCleqv to 12.9% NaCleqv, with peak values of 6.0%~7.5% NaCleqv, indicating that the ore-forming fluids are characterized by low salinity and mid-low temperature. Isotopic analyses show that δDH2O and δ18OH2O of the ore-forming fluids are -115‰~-90‰ and 5.2‰~6.8‰, respectively.