地球物理测量在特颇格日图镍钴铁找矿中的应用

Application of geophysical surveying to Mineral Exploration in Tepogeritu Fe-Ni-Co Deposits of Inner Mongolia

特颇格日图镍钴铁普查区位于内蒙古中部宝音图隆起带上。根据地面物化探测量,发现工作区的磁异常主要位于超基性岩体南部,化探异常主要位于超基性岩体内,极化率异常一般出现在北部负磁异常的一侧,工作区高极化地段主要表现为三种特征:低阻高极化,相对低阻高极化,高阻高极化,经钻探验证,对应低阻高极化布设的钻孔镍品位明显高出其它钻孔,由此可以认为该地区成矿有利部位应该在正磁异常和极化率异常之间的低阻高极化的超基性岩中。

Tepogeritu Fe-Ni-Co mineral prospecting area are located in the Buyant uplift belt, central Inner Mongolia. According to the surface physical and chemical exploration survey, found that magnetic anomaly in working area located mainly in the ultrabasic rock inside, geochemical anomalies mainly in the ultrabasic rock south, and polarization rate anomaly generally appear in the side of the northern negative magnetic anomaly, there are three mainly features in high polarization area of the work area： low resistance high polarization, relatively low resistance high polarization, high resistance high polarization. The result of drilling reveal that drilling in low resistance high polarization nickel grade significantly higher than other drilling, which can prove mineralization favorable position should be in the ultrabasic rocks of low resistance high polarization which between positive magnetic anomaly and polarization rate abnormal.