Physical-Chemical Conditions of Mineralization and the Transportation and Deposition of Au in Shuiyindong Gold Deposit, Guizhou Province
详细信息
- 责任者：Xiao Dechang (College of Earth Sciences ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Li Baohua
- 刊名：Computing Techniques for Geophysical and Geochemical Exploration
- 出版年：2012
- 卷期：34(1)
- 关键词：金矿 ; gold ores ; 矿质运移 ; ore transport ; 贵州 ; Guizhou Province
- 页码：p.73-79
- 图表：2 illus., 7 tables, 18 refs.
- 分类号：1001
- 出版序号：20130256
- issnNo：ISSN1001-1749
- isbnNo：CN51-1242/P
摘要
Based on the research of fluid inclusions and thermodynamics calculate in Shuiyindong gold deposit, the authors studied the physical-chemical conditions of mineralization,and the transportation form and deposition mechanism of the deposit. The research shows that the main temperature of gold mineralization is 215 ℃～267 ℃,and the pressure is 28.5 MPa～37.2 MPa. The ore-forming fluid with characteristics of weak acidity (pH=4.312), reducibility (fO2﹤10-35.315×105 Pa). AuHS0 is the main transportation form of Au in the ore-forming solution. The main deposition mechanisms of Au are the decrease in the activity of HS- and fO2 and an increase in pH values.
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