赣南高山角矿区物化探异常对隐伏矿产的预测作用  

Geophysical and Geochemical Anomalies Prospecting Prediction for Concealed Ore in Gaoshanjiao Deposit, Southern Jiangxi

作　　者：刘翠辉 李伟[1] 贺根文 李江东 陈琪[1] LIU Cuihui;LI Wei;HE Genwen;LI Jiangdong;CHEN Qi(Geological Survey Team of Gannan,Bureau of Geology and Mineral Exploration&Development of Jiangxi Province,Ganzhou 341000,China)

机构地区：[1]江西省地矿局赣南地质调查大队

出　　处：《四川有色金属》2019年第3期14-18,共5页Sichuan Nonferrous Metals

基　　金：中国地质调查局子项目“江西崇义柯树岭-赣县合龙锡多金属矿集区矿产地质调查”(DD20190166-12)和“江西于都银坑-宁都青塘地区金银多金属矿整装勘查区矿产地质调查与找矿预测”(DD20190159-22)资助

摘　　要：高山角矿区位于银坑贵多金属矿田北东部,以破碎带蚀变岩型矿产为主,成岩时代与矿田一致。矿区土壤元素Cu、Pb、Zn、Ag异常套合度较好,集中分布于岩体北部的蚀变砂岩中;壤中游离汞异常高值与矿化破碎带、岩脉对应良好;钻孔原生晕数据显示该区以银铅锌铜矿化为主,次级裂隙带为矿化富集区。CSAMT和磁测异常能有效分辨出构造、隐伏岩脉、岩体及矿化蚀变带的分布形态。通过后期钻孔验证,物化探异常预测区深部揭露多层矿(化)体,对区内隐伏矿产的勘查工作具有指导意义。Gaoshanjiao predicting area is located in the east section of Yinkeng Au-Ag polymetallic ore-field,and has the same mineralization period.The altered rock type deposit in the fracture zone is the main mineral type.Cu,Pb,Zn and Ag element anomalies of soil are concentrated distribution in limonitization,silication and sericitization sandstone,which distributed in the north outside of Gaoshanjiao rockbody.According to the measurement on the soil mercury gas,the high value anomalies have good correspondence to the mineralization fracture zone and porphyry veins.The lithogeochemistry of drilling cores show the main mineralization is leadzinc-silver-copper,and the nearly east-westward secondary faults provide host space.The spatial distribution of concealed structure,dike and rock body can be distinguished by CSAMT and magnetic method anomaly,and the low-resistant anomaly zone is considered as ore-caused anomaly.Engineering verification shows the comprehensive anomalies based on the geophysical and geochemical method can efficiently predict the distribution of ore,and has guiding significance for the exploration of blind mineral resources.

关 键 词：矿致异常 破碎带蚀变岩型 地球化学晕 CSAMT 银坑矿田 

分 类 号：P618[天文地球—矿床学]