Lead Isotopic Characteristics of the Tongke-Changpo Cassiterite Sulfide Deposit in the Dachang Oilfield, Guangxi Province and Their Geological Significance
详细信息
- 责任者：Xu Ming (Beijing Ximeng Mineral Exploration Co. ; Beijing 100012 ; China) ; Cai Minghai
- 刊名：Geology and Prospecting
- 出版年：2012
- 卷期：48(2)
- 关键词：锡矿 ; tin ores ; 广西 ; Guangxi Province
- 页码：p.352-358
- 图表：3 illus., 14 tables, 2 refs.
- 分类号：1001
- issnNo：ISSN0495-5331
- isbnNo：CN11-2043/P
摘要
The Tongkeng-Changpo cassiterite sulfde deposit is the largest and most representative deposit in the Dachang orefield, Guangxi Province. This paper made a systematic analysis on characteristics of ore lead isotopes from this deposit and studies the source of mineralization materials of the de- posit coupled using the whole-orientation comparison method and △β-△γ trace method. The result indicates that the ore-forming materials are mainly from magma rocks, Devonian strata and the basement, and partly from mantle. Mineralization process of the deposit has undergone two periods, i. e. , the early mineralization stage related to basic magmatic activity （mantle source）, and the later stage related to acidic magmatic activity （mixing source）.