Mineralogy of Sulfides from Ultraslow Spreading Southwest Indian Ridge 49.6°E Hydrothermal Field and Its Metallogenic Significance
详细信息
- 责任者：Ye Jun (Institute of Oceanology ; Chinese Academy of Sciences ; Shandong 266071 ; China) ; Shi Xuefa
- 刊名：Acta Mineralogica Sinica
- 出版年：2011
- 卷期：31(1)
- 关键词：硫化物矿床 ; sulfide deposit ; 矿物学 ; mineralogy ; 印度洋 ; Indian Ocean
- 页码：p.17-29
- 图表：7 illus., 8 tables, 28 refs.
- 分类号：1000
- 出版序号：20120254
- issnNo：ISSN1000-4734
- isbnNo：CN52-1045/P
摘要
SWIR 49.6°E hydrothermal field is the first discovered active field on the Southwest Indian ridge (SWIR) by the Chinese R/V Da Yang Yi Hao in 2007. Based on the characteristics of mineral in the sulfide samples, two mineralization stages have been identified.Stage I, Zn-rich sulfide stage,the main mineral assemblages are sphalerite-pyrite-chalcopyrite and the temperature of ore-forming fluid is relatively low; Stage II, Fe-rich sulfide stage, the main mineral assemblages are pyrite-marcasite-sphalerite, and the ore-forming temperature is relatively high. The sulfides formed in early stage have been reworked by the late stage fluid.