江西省于都县桥子坑铅锌矿床地质特征及找矿方向

Geological characteristics and prospecting direction of Qiaozikeng lead-zinc deposit in Yudu County,Jiangxi Province

桥子坑铅锌矿床位于江西省于都县银坑贵多金属矿田中东部,大地构造位置处于赣南东部于都银坑-宁都青塘燕山期构造盆地南段,武夷块体与罗霄块体的交接带上。通过浅部地表工程和少量深部钻探工程,查明5条破碎蚀变岩型金银铅锌矿化带、2条层控型金银铅锌矿化带。桥子坑铅锌矿床赋存于南华系上施组和青白口系库里组中,受地层、断裂构造、褶皱构造多重因素控制,矿床类型有破碎蚀变岩型和层控型两种。最终确定矿区深部具有较大成矿潜力,可作为下一步找矿方向。

Qiaozikeng lead-zinc deposit located in the central eastern part of the Yinkeng precious metal ore field in Yudu County,Jiangxi Province,The geological structure of Qiaozikeng lead-zinc deposit is located in the southern section of the Yanshanian tectonic basin from Yudu Yinkeng to Ningdu Qingtang in the eastern part of southern Jiangxi,it also located at the junction of the Wuyi block and the Luoxiao block.Through shallow surface engineering and a small amount of deep drilling engineering,Five fractured altered rock type gold-silver-lead-zinc mineralization zones and two stratabound gold-silver-lead-zinc mineralization belts have been identified.The Qiaozikeng lead-zinc deposit occurs in the Shangshi group of the Nanhua formation and the Kuri group of the Qingbaikou formation.It is controlled by multiple factors such as stratigraphy,fault structures,and fold structures,and the deposit types are divided into two types:fractured altered rock type and layer controlled type.Finally,it was determined that the deep part of the mining area has significant mineralization potential and can be used as the next direction for mineral exploration.