• 责任者：Dai Wenjun (No. 3 Geology and Mineral Exploration Team ; Gansu Provincial Bureau of Geology and Mineral Exploration and Development ; Lanzhou 730050 ; China) ; Chen Guozhong
• 刊名：Gansu Geology
• 出版年：2009
• 卷期：18(1)
• 关键词：金矿 ; gold ores ; 甘肃 ; Gansu Province
• 页码：p.21-27
• 图表：2 illus., 2 tables, 21 refs.
• 分类号：1001
• issnNo：ISSN1004-4116
• isbnNo：CN62-1191/P

 ///Dashui gold deposit is located in the south margin of west Qinling. On the basis of the study done by former experts, after studying systematically fluid inclusions of deposit, the authors supposes that the most inclusions within calcite are gaseous and fluid inclusions. In the inclusions contained gaseous composition include CH₄, CO and H₂, which indicate the oxidizing environment, and the fluid composition is composed of anions as SO₄^-2 first and Cl^- second, cations as K⁺ first, Na⁺ second. Au migrated in the complex of AuSO₄ within the metallogenetic fluid. The metallogenetic temperature is 120℃～220℃, within the range of low temperature. According to the result of comprehensive analysis, it is supposed that this deposit is a strata-bound, shallow-supershallow-seated, post-magamtic, hydrothermal metasomatic deposit which is a product of multi-stage tectonomagmatic process.