关键词: 铜钼矿, 花岗斑岩, 深部找矿, 地质特征, 成矿潜力, 找矿靶区

Abstract: Zhuyuanxi CuMo mining area is located at the junction of the south margin of North China Craton and Qinling orogenic belt.The metallogenic belt belongs to the TongbaiDabie molybdenum ore belt,which is favorable for copper and molybdenum polymetallic ore mineralization.In order to further explore the metallogenic potential of the mining area,systematic survey and exploration works such as 1∶10 000 geological survey,1∶10 000 soil geochemical exploration,1∶1 000 geological profile survey and exploration of pit and drilling are carried out.Study results of geological characteristics of the mining area show that:① The main ore controlling factors of copper and molybdenum deposits in the mining area are rock mass and structure.Granite porphyry is the parent rock of mineralization.Rich ore bodies are often formed at the intersection of faults.② Two Mo ore bodies and one Cu ore body fornd in the mining area are hosted in granite porphyry,which have the characteristics of typical porphyry and molybdenum deposit.Based on the above analysis results,according to technical process of prospecting including 1∶10 000 geological survey,1∶10 000 soil geochemical exploration,1∶1 000 geological profile survey,trenching and drilling exposure,two molybdenum prospecting targets (named as A and B) have been identified in the mining area.Through engineering verification,it is found that there are concealed granite porphyry and many molybdenum ore bodies in the deep part of the target area.The estimated (controlled) + (inferred) resource scale of molybdenum ore bodies in target area A is medium.According to the metallogenic geological characteristics of the area and the analogy with the adjacent similar deposits,it is considered that the middle and deep parts of Zhuyuanxi CuMo mining area have great metallogenic potential,which is worthy for further work.