Geological Characteristics and Genesis of Baoxingchang Gold Ore District in Yunnan Province

详细信息   

• 责任者：Li Hanguang (China University of Geosciences ; Beijing 100083 ; China) ; Guo Xiaodong
• 刊名：Mineral Deposits
• 出版年：2008
• 卷期：27(5)
• 关键词：金矿 ; gold ores ; 云南 ; Yunnan
• 页码：p.587-595
• 图表：2 illus., 2 tables, 12 refs.
• 分类号：1001
• issnNo：ISSN0258-7106
• isbnNo：CN11-1965/P

摘要

Located in the north of the Ailaoshan ore-forming belt, the Baoxinchang gold deposit has its unique geotectonic location that has caused complex metallogenic geological conditions and frequent structural and magmatic activities. The formation of the gold deposit is closely related to Himalayan alkali-rich porphyry both in time and in space. This paper has summed up geological characteristics of this area and made a division of the ore-forming phases and stages. S, Pb, H, O isotope characteristics suggest that clastic rock of 4th lithologic member of Lower Ordovician Xiangyang Group seems to be the source bed of gold mineralization. Multiple phases of structural-magmatic activity have resulted in the complexity of deposit assemblage types in this area characterized by multi-phase, multi-stage, diversity and multiple mineral species. Mineral deposits are mainly of porphyry, quartz-veined, tectonically-altered rock and laterite types.