Re-Os Isotopic Dating of Molybdenite from the Taqian W-Mo Deposit in Leping County, Jiangxi Province and Its Geological Implications
详细信息
- 责任者：Huang Anjie (Northeastern Jiangxi Geological Party ; Jiangxi Bureau of Geology and Mineral Exploration ; Shangrao 334000 ; China) ; Wen Zugao
- 刊名：Acta Petrologica et Mineralogica
- 出版年：2013
- 卷期：32(4)
- 关键词：钨矿 ; tungsten ores ; 钼矿 ; molybdenum ores ; 铼—锇计时 ; Re-Os dating ; 江西 ; Jiangxi Province
- 页码：p.496-504
- 图表：6 illus., 1 table, 11 refs.
- 分类号：1001
- issnNo：ISSN1000-6524
- isbnNo：CN11-1966/P
摘要
The Taqian tungsten-molybdenum deposit is located in the Taqian-Fuchun metallogenic belt on the southern margin of the Yangtze plate. In this paper, the authors determined the molybdenite age of the Taqian tungsten molybdenum deposit by means of ICP-MS molybdenite-Os isotope analysis. The model ages of 5 samples vary between 160.8 and 163.4 Ma; the molybdenite Re-Os isochron age is(162±2) Ma, MSWD=1.7, suggesting that the ore-forming process took place in late Early Jurassic. A comparison with the metallogenic time of other similar deposits in this area shows that the ore-forming time in the Taqian-Fuchun metallogenic belt is much later than that of the Dexin copper deposits, and their ore-controlling structures are different too.