Geological Characteristics of Jialeke Gold Deposit in
详细信息
- 责任者：Wang Xiaowei (Department of Resource and Environment ; College of Lanzhou University ; Lanzhou 730000 ; China) ; Wang Jinrong
- 刊名：Mineral Resources and Geology
- 出版年：2010
- 卷期：24(6)
- 关键词：金矿 ; gold ores ; 甘肃 ; Gansu Province
- 页码：p.538-541,556
- 图表：4 illus., 3 tables, 7 refs.
- 分类号：1001
- issnNo：ISSN1001-5663
- isbnNo：CN45-1174/TD
摘要
Jialeke gold deposit occurs in Gudaoling Group (D2g) limestone in west Qinling orogenic belt in the form of irregular pocket or funnel, with the mineralization being strictly controlled by EW striking fracture and ore minerals predominated by hematite, natural gold and pyrite, and alteration characterized by silicification, sericitication and limonite (hematite) mineralization. Ore forming processes can be classified into primary ore forming period and surface oxidation-secondary enrichment period. Ore types are mainly limonite mineralization, argillation, clastic rock type, pyritization (limonite), silicification, carbonation clastic limestone type. Ore fabric and mineral assemblage indicate that the ores were mainly formed by hydrothermal filtration replacement and filling sedimentation in limited space in fissures or structures, forming relatively completed hydrothermal replacement-filling-deposition metallogic system.