内蒙古克什克腾旗亚马图矿区银多金属矿地物化综合找矿方法的应用及效果

The application and effect of the comprehensive geophysical and geochemical prospecting method for the Yamatu silver polymetallic ore in Keshiketengqi,Inner Mongolia

区域地质调查成果显示,克什克腾旗亚玛图地区为铅锌银成矿远景区,文章通过对该区进行1:5万土壤测量,确定为Au、Ag、Sb、Cu、Pb、Zn、Hg、Bi多元素综合异常区。进一步1:1万土壤测量、高精度磁法、激电中梯及地质测量综合找矿方法应用表明:土壤中银、铅、锌、锡含量达到或接近矿化含量水平,且兼具异常规模大特点,圈定了10处组合异常。高精度磁法及激电中梯测量表现出区内具有较强的磁性和电性异常体的存在,与化探异常呈现较好的套合性。地质填图在化探异常部位发现银锌矿(化)体8条,矿化蚀变带7条。目前在2个物化探综合异常钻探工程施工6个孔均见良好的银铅锌工业矿体,表明了该区物化探综合找矿方法应用的良好找矿效果。

According to the results of regional geological survey,the area is a prospective area for Pb-Zn-Ag mineralization.The results show that the comprehensive anomaly areas of Au-Ag-Sb-Cu-Pb-Zn-Hg by soil geochemistry survey at scale 1:50000.Further,soil geochemical survey,high-precision magnetic method,IP Mid gradient survey and geological survey comprehensive prospecting method at scale 1:10000 show that:The contents of silver,lead,zinc and tin in the soil reach or close to the level of mineralization,and have the characteristics of large-scale anomaly.It is the main ore-forming element and the main ore prospecting anomaly area in this area,and 10 combined anomalies are delineated.There are strong magnetic and electrical anomalies in the area,which show good coincidence with geochemical anomalies.There are 8 Ag-Zn ore bodies and 7 mineralized alteration zones in the area by geologic mapping.Good Ag-Pb-Zn industrial ore bodies were found in 6 boreholes of 2 geophysical and geochemical integrated abnormal drilling projects,which shows that the comprehensive geophysical and geochemical prospecting method has a good prospecting effect in this area.