四川布拖县老吉铅锌矿地质特征及找矿方向

Geological Features and Range of Reconnaissance for the Laoji Pb-Zn Deposit in Butuo,Sichuan

四川布拖老吉铅锌矿区位于重要的成矿区带上。该区铅锌矿受断层破碎带控制,呈脉状产出,主要赋存于碳酸盐岩中的断裂及其次级断裂、或者背斜层间破碎带。矿(化)体呈脉状、团块状产于白云质灰岩中,穿层产出,属中低温热液脉型铅锌矿。因此,老吉矿区下一步的找矿方向应该在有化探异常、有蚀变现象或者有矿化现象的构造破碎带开展物探工作,在物探异常集中区域施工少量深部工程,以验证物探异常和寻找工业矿体。

The Laoji Pb-Zn Deposit in Butuo,Sichuan is controlled by fault and fractured zone,belonging to mesothermal and epithermal deposit.The Pb-Zn orebodies occur as vein and nodule in dolomitized limestone.Geophysical and geochemical anomalies,wallrock alteration and structural fractured zone may be considered as ore criteria.