Organic Petrography and Geochemistry of the Huijiabao Gold Field, Southwestern Guizhou
详细信息
- 责任者：Peng Yiwei (State Key Laboratory of Geological Processes and Mineral Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Gu Xuexiang
- 刊名：Earth Science Frontiers
- 出版年：2013
- 卷期：20(1)
- 关键词：金矿 ; gold ores ; 贵州 ; Guizhou Province
- 页码：p.117-128
- 图表：illus., 3 tables, 46 refs.
- 分类号：1001
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
摘要
The Huijiabao gold field is one of the major production areas of Carlin-type gold deposits in Southwestern Guizhou Province.Studies of organic petrography and geochemistry were carried out on the four representative gold deposits,including Shuiyindong,Zimudang,Taipingdong and Bojitian.Solid bitumen occurring in the Huijiabao gold field is commonly hosted by mineralized rocks,filling fractures and open spaces.Paragenetic relationship between bitumen and hydrothermal minerals indicates that bitumen formed simultaneously with gold.Abundant hydrocarbon inclusions were found in the ores.Organic geochemical characteristics imply that organic matters in ores and host rocks have a similar high maturity,and underwent a similar geological process.Organic matter was formed in a sedimentary environment of high reduction and medium-low salinity,and was mainly sourced from marine bacteria and algae and a small amount from continental organic matter.