关键词: 多源信息, 找矿预测, 砂金沟金矿床, 夹皮沟金成矿带

Abstract: The Jiapigou gold metallogenic belt is one of the important gold concentration areas in the marginal-Pacific metallogenic belt. The Shajingou gold deposit is located in the southeast of Huadian City, Jilin Province, which is in the eastern part of the northern margin of the North China plate, the southern side of the JiHei orogenic belt and the central part of the Jiapigou gold metallogenic belt, with superior metallogenic geological conditions. A number of large, medium and small gold and silver deposits have been discovered in the exploration area and surrounding area, such as Erdaogou gold deposit, Miaoling gold deposit, Yunfeng lead-zinc deposit and Majiadian gold deposit in the northwestern area, Bajiazi gold deposit in the north area and Dayangcha gold deposit in the exploration area. With the same geological background as the above gold deposits, the Shajingou gold deposit has the geological conditions of producing large and medium-sized gold deposits. Based on the comprehensive study of geophysics, geochemistry and geology, it is concluded that the ore-bearing structures in study area are characterised by low resistance and high polarization. The development of low resistance areas often indicates the existence of fracture structures, and the medium and high resistance zones within the low resistance zones are striped and have more potential for mineralisation. The soil geochemical anomalies are Au-Ag-As-Cu-Hg-Sb and so on. The distribution of ore bodies in the northwest and northeast of study area is equidistant, the ore bodies are spatially correlated with the vein rocks, and the ore bodies are enriched in elements, and the multi-causal coupling of mineralisation is discussed. The next prospecting should be fault-controlled ore and magmatic intrusion system controlled ore.

Key words: multi-source information, prospecting prediction, Shajingou gold deposit;Jiapigou gold metallogenic belt