oft-com:office:smarttags" />Ore Genesis of Debao Copper Deposit, Guangxi
详细信息
- 责任者：Zhang Yanhui (Institute of Mineral Resources ; Chinese Academy of Geological Sciences ; Beijing 100081 ; China) ; Wei Changshan
- 刊名：Geology and Mineral Resources of South China
- 出版年：2011
- 卷期：27(1)
- 关键词：铜矿 ; copper ores ; 广西 ; Guangxi
- 页码：p.33-38,45
- 图表：8 illus., 2 tables, 5 refs.
- 分类号：1001
- issnNo：ISSN1007-3701
- isbnNo：CN42-1417/P
摘要
On the basis of statistic analysis,the content of trace elements, such as Au, Ag, As, Bi and Sb et al. in the skarn rocks (ore) are strongly enriched than in the other rocks. The rare earth elements (REE) are slightly different in different types of rocks. The REE characteristics indicate that the mineralization fluid of Debao deposit is mainly come from skarn-type alteration caused by magma intrusion. The overall characteristics indicate the gradual transition relations between the copper mineralization and the skarn mineralization caused by the granite intrusion. Based on the homogenization and decrepitation temperature analysis of fluid inclusions in minerals, the mineralization temperature is range from 200 ℃ to 350 ℃. On analysis of the sulfur isotope, the value of δ34S is proportional to the distance from Qinjia granite. It all shows that the ore-forming hydrothermal fluid is from Qinjia granite, the Debao copper deposit belongs to magmatic hydrothermal metasomatic deposit.
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