关键词: 钼钨矿　 化探综合异常　 找矿标志　 找矿模型 

Abstract: The Shiyaogou molybdenum-tungsten deposit in Luanchuan County is located at the junction of the southern margin of the North China Block and the North Qinling Orogenic Belt. This area has experienced multiple phases of tectonic movements,and Yanshanian granite bodies are widely exposed in the region,which provides favorable geological conditions for mineralization. According to the 1 ∶50 000 comprehensive geochemical anomalies,combined with the geological characteristics, geochemical and geophysical characteristics of the deposit,the internal relationships among geological,geocheical and geophysical information were systematically analyzed,and the comprehensive geological,geochemical and geophysical prospecting model was established. This model integrates geological background analysis,geochemical anomaly tracing and geophysical deep detection,realizing the complementary advantages of different methods,and has achieved ideal prospecting results in the application practice of this area. The research shows that:① Geological survey preliminarily identified the metallogenic geological background of the deposit. Molybdenum mineralization mostly occurs in the outer contact zone and near the inner contact zone between the rock mass and the Sichakou Formation,and molybdenum-tungsten ore is closely related to the Early Cretaceous intrusive rocks. ② Through the 1 ∶10 000 soil profile survey,the comprehensive anomalies of copper,tungsten and molybdenum were delineated. The soil anomalies basically coincide with the concentration centers of the 1 ∶50 000 stream sediment anomalies,indicating that this area has the local enrichment characteristics of metallogenic elements such as Mo,W and Bi. ③ The results of IP intermediate gradient survey and IP sounding show that there are obvious high-resistance and high-polarization anomalies in this area,which basically coincide with the occurrence positions of the orebodies. ④ By comprehensively utilizing geological,geochemical and geophysical methods,an comprehensive prospecting model for the Shiyaogou molybdenum-tungsten deposit was established,providing a scientific basis for the metallogenic prediction in this area. ⑤ According to the Comprehensive information prospecting model,a total of 1 molybdenum orebody,10 molybdenum mineralized bodies,4 tungsten mineralized bodies and 1 molybdenum-tungsten mineralized body were identified in the Shiyaogou molybdenum-tungsten deposit. Among them,the 12 # molybdenum orebody is divided into two sections,east and west,with a controlled length of 135 m,a thickness of 0. 94~ 2. 16 m,and a grade of 0. 112% ~ 0. 149%,achieving remarkable exploration results. 

Key words: molybdenum-tungsten ore,comprehensive geochemical anomaly,prospecting indicator,prospecting model