大官厂铀钼多金属矿床控矿因素及找矿方向

Ore-controlling Factors and Prospecting Direction of Daguanchang U-Mo Polymetallic Deposit

大官厂铀钼多金属矿床位于华北地台北缘西段,矿化受断裂构造、隐爆角砾岩和围岩蚀变控制,其中隐伏次流纹斑岩体晚期隐爆作用形成的隐爆角砾岩是控矿的主导因素,矿化主要赋存在次流纹斑岩体外接触带的隐爆角砾岩中。今后找矿方向是北东东向F2断裂与北北西向断裂交汇部位和隐爆角砾岩发育地段,其中0号勘探线、15号勘探线、东部激电异常与磁异常复合部位是今后矿区勘查工作的重点靶区。

The Da Guanchang U-Mo polymetallic deposit is located at west segment of north brink in north china platform.Mineralization is controlled by faulted structure,concealed explode breccia and wall-rock alteration,thereinto,the dominant factor of ore controlling is crptoexplosion breccia formed by later concealed explode action of perdu rhyolite porphyry;Mineralization mainly occurred in crptoexplosion breccia of exocontact of rhyolite porphyry.The prospecting direction is intersection region by F2 fracturing of NEE orientation and NNW fracturing as well as concealed explode breccia upgrowth site,thereinto,No.0 prospecting line,No.15 prospecting line,east stimulate electrical anomaly and magnetic anomaly compound region is important prospect working target area.