Discussion on the Genetic Type of Cu-Mo and Pb-Zn-Ag Deposits of the Madate Area in Mongolia
详细信息
- 责任者：Guo Baichuang (Zhengyuan Geological Exploration Institute of Shandong ; Bureau of China Metalluray and Geology ; Jinan 250101 ; China) ; Yu Baoxian
- 刊名：Northwestern Geology
- 出版年：2013
- 卷期：46(1)
- 关键词：铜矿 ; copper ores ; 钼矿 ; molybdenum ores ; 铅锌矿床 ; lead-zinc deposit ; 银矿 ; silver ores ; 蒙古 ; Mongolia
- 页码：p.130-138
- 图表：illus., 2 tables, 13 refs.
- 分类号：1001
- issnNo：ISSN1009-6248
- isbnNo：CN61-1149/P
摘要
A lot of polymetallic deposits, including the Chabu Pb-Zn-Ag deposit, Saerxite Pb-Zn-Ag deposit and Lamacaolutu Cu-Mo deposit, have been found in the Madate area of eastern Mongolia, which belongs to central Mongolia-Erguna polymetallic ore belt. Through comprehensive study on the mineralization age, the ore-forming geological backgroud and the surrounding rock characteristics of each deposit, we classify the mineralization period of the area into two stages: Late Variscan and Yanshanian. Copper-molybdenum deposit is superimposed mineralization of the Late Variscan and Early Yanshanian, Lead-zinc-silver deposit was formed in the Late Yanshanian. The mineralization of the two types of deposits is closely related to the tectonic and magmatic activity. At the same time, by analyzing and comparing the mineralization characteristics and orebody characteristics of each deposit, we classify these deposits into two genetic types: porphyry-type Cu-Mo deposit and epithermal low-temperature hydrothermal vein-type lead-zinc-silver deposit. Based on the trace element analytic results of the ore-forming source rock of Saerxite Pb-Zn-Ag deposi and Lamacaolutu Cu-Mo deposit, we think two genetic types as a unified metallogenic series and establish the porphyry-epithermal low-temperature hydrothermal vein-type mineralization model.
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