Geochemical Characteristics of Xiaogouli-Sanyangba Gold Deposit of Xihe-Chengxian Basin in Gansu Province
详细信息
- 责任者：Kang Yalong (School of Geosciences and Environmental Engineering ; Central-South University ; Changsha 410083 ; China) ; Liu Jishun
- 刊名：Contributions to Geology and Mineral Resources Research
- 出版年：2011
- 卷期：26(2)
- 关键词：金矿 ; gold ores ; 甘肃 ; Gansu Province
- 页码：p.188-194
- 图表：4 illus., 7 tables, 28 refs.
- 分类号：1001
- issnNo：ISSN1001-1412
- isbnNo：CN12-1131/P
摘要
On the basis of detailed investigation of geological setting and ore deposit features, this paper deals with geochemistry and sulfur and lead isotopes of Xiaogouli-Sanyangba gold deposit in Xihe-Chengxian basin, Gansu Province. The results show that the Co/Ni of pyrite is mostly more than 1 indicating that the ore-forming material is derived from magmatic-hydrothermal fluid. Analysis showed that in liquid pahse Na+, K+ are the dominant cation and Cl- the dominant anion, in gas phase H2O and CO2 dominant. The homogenization temperature, salinity range in 115 ℃ to 205 ℃ and 7.2% to 11.5%, respectively. The ore fluid is mainly composed of meteoric water.