- 责任者：Zhou Xuegui (China University of Geosciences ; Wuhan 430074 ; China) ; Wu Junhua
- 刊名：Mineral Deposits
- 出版年：2011
- 卷期：30(4)
- 关键词：斑岩钼矿床 ; porphyry molybdenum deposit ; 铼—锇计时 ; Re-Os dating ; 江西 ; Jiangxi Province
- 页码：p.690-698
- 图表：5 illus., 2 tables 33 refs.
- 分类号：1001
- issnNo：ISSN0258-7106
- isbnNo：CN11-1965/P
Located in the inner and outer contact zones between granite porphyry and metamorphic rocks of Xunwuyan Formation, the Yuanlingzhai molybdenum deposit is a large-sized porphyry molybdenum deposit in southern Jiangxi Province. Re-Os isotopic dating of 5 molybdenite samples from the mineralized quartz veins of this ore deposit has yielded a precise isochron age of (161.1±3.9) Ma and a weighted average model age of (162±1) Ma. The intercept of isochron is (0±2) ng/g, and the MSWD is 0.50. The Yuanlingzhai molybdenum deposit was formed in mid-late Middle Jurassic, and its metallogenic age corresponds to the second ore-forming stage (170～150 Ma) in the Late Jurassic in South China, consistent to regional tungsten-tin mineralization ages around 160 Ma. Molybdenum mineralization occurred in the range of 165～130 Ma in South China.