蔡家峪金多金属矿区土壤地球化学特征及找矿效果

摘要

According to the 1∶10 000 geochemical data in Caijiayu polymetallic mining area,the distribution characteristic of the elements in soil are analyzed.The results show that the average contents of Pb,Cu,Zn,W,Au,Bi,Sn,Mo,Ag,As,Sb are close or lower than the soil background values of China,except the higher content of Hg and the coefficient of variation of Au and Bi.Based on the 1∶10 000 soil geochemical anomaly data,the authors identify 4 mineralized altered crush zones and delineate gold and silver ore bodies.Further trenching and deep engineering work have verified the validation of the method.%根据蔡家峪金多金属矿区1∶1万土壤地球化学测量数据,分析土壤元素地球化学分布特征.结果显示,矿区土壤中除Hg平均含量明显高于中国土壤背景值外,Pb、Cu、Zn、W、Au、Bi、Sn、Mo、Ag、As、Sb平均含量与中国土壤背景值相近或偏低,但Au、Bi变异系数较大.根据1∶1万土壤地球化学异常,发现了4个矿化的蚀变破碎带,并圈定出金银矿体,采用槽探揭露和深部工程验证了该方法的有效性.