weight: normal">Sources of Ore-Forming Fluids and Materials of the Baogutu Porphyry Copper Deposit in Xinjiang: Constraints from Sulfur-Hydrogen-Oxygen Isotopes Geochemistry
- 责任者：Zhang Zhixin (MLR Key Laboratory of Metallogeny and Mineral Assessment ; Institute of Mineral Resources ; Chinese Academy of Geological Sciences ; Beijing100037 ; China) ; Yang Fuquan
- 刊名：Acta Petrologica Sinica
- 出版年：2010
- 卷期：26(3)
- 关键词：斑岩铜矿床 ; porphyry copper deposit ; 成矿物质来源 ; source of ore material
- 页码：p.707-716
- 图表：4 illus., 2 tables, 57 refs.
- 分类号：1001
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
Copper mineralization is hosted by porphyritic (quartz) diorite, diorite porphyrite, crypto explosive breccia, minor in granodiorite. Based on cross-cutting relationships and mineral assemblages of the ore veins，the ore-forming process underwent three stages as follows：biotite-potassic feldspar-albite stage，quartz-sulfide stage and quartz carbonate stage. The combined isotopic data suggested that the ore-forming fluids were derived from deep-seated source magmatic water．The sulfur in the fluids was derived from deep-seated magma or the mantle．The authors suggest metallogenesis of the Baogutu Porphyry copper deposit took place in the Late Carboniferous, and its mineralization is closely related to the intruding of the intermediate-acid porphyry body.