Re-Os Dating for the Molybdenite from Bolong Porphyry Copper-Gold Deposit in Tibet , China
详细信息
- 责任者：Zhu Xiangping (Chengdu Institute of Geology and Mineral Resources ; Chengdu 610081 ; China) ; Chen Hua’an
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(7)
- 关键词：斑岩铜矿床 ; porphyry copper deposit ; 金矿 ; gold ores ; 铼—锇计时 ; Re-Os dating ; 西藏 ; Tibet
- 页码：p.2159-2164
- 图表：2 illus., 1 table, 29 refs.
- 分类号：1001
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
Bolong porphyry Cu-Au deposit, neighbouring Duobuza porphyry Cu-Au deposit, is a newly discovered deposit. Two stages of granodiorite porphyries were emplaced in Bolong deposit, and followed by later intruding granite porphyry. Phyllic alteration is occurring on the surface of Bolong deposit, and potassic alteration was found in the depth associating with granodiorite porphyries. At Bolong, Re-Os data of four molybdenite samples from quartz-molybednite veinlets yielded an isochron age at (119.4±1.3) Ma (MSWD=0.63, n=4), coincident to the mineralization age of Duobuza deposit. Similar mineralization age, closely neighbouring spatial distribution of Bolong and Duobuza porphyry deposits suggest that these two deposits might be generated from a same tectonic-magmatic activity background.