青海省锡铁山矿区外围异常成矿潜力分析

锡铁山铅锌矿是中国目前铅锌储量最大的矿床。但是由于该区外围地势险要,地形复杂,国内对其外围成矿潜力的研究并不是很多。本次对该矿床外围进行了740 km2面积的1∶5万水系沉积物测量及2053 km2面积的1∶5万高精度磁法测量,最终圈定化探异常18处,物探异常28处。通过后期异常查证工作,笔者对这些异常区的成矿潜力做了具体分析,从中优选出了小柴旦湖南、柳园沟、向南沟、锡铁山站南4处成矿有利靶区。

An analysis of the metallogenic potential of the anomaly in the periphery of the Xitieshan Pb-Zn ore district

The Xitieshan lead-zinc deposit has the largest lead-zinc reserves in China. However, because of complicated topography, the external mineral exploration of this area remains very insufficient. Based on 1:50000 stream sediment survey in an area of 740 km2 and 1:50000 high-precision magnetic measurement in an area of 2 053 km2 , the authors delineated 18 geochemical anomalies and 28 geophysical anomalies. Then after examining the anomalies and analyzing the mineralizing potential, the authors delineated four ore tar-gets, i.e., south of Xiaochaidan Lake, Liuyuangou, Xiangnangou and south of Xitieshan.