应用衬度异常量法在宁夏六盘山立洼峡寻找铅锌矿

在化探异常评价时,推断是否矿致异常及确定主成矿元素,是地球化学工作者面临的一个主要问题,特别是有时会出现多达十几种元素的综合异常,使这一问题更加复杂化。笔者介绍了衬度异常量这一参数的应用,可较为简单地帮助确定主成矿元素,进而对异常作出评价,指导找矿。用该方法在宁夏六盘山铅锌矿勘查中进行了实际应用,无论区域化探异常还是矿区化探异常的主成矿元素判断,都与实际验证见矿相吻合,有助于矿产勘查中地球化学异常主成矿元素的确定,值得推广应用。

THE APPLICATION OF THE RNAP METHOD TO THE PROSPECTING WORK IN THE LIWAXIA LEAD-ZINC DEPOSIT OF THE LIUPAN MOUNTAIN,YINXIA

In the appraisal of geochemical anomalies, the distinction between the anomaly related to mineralization and the barren anom-aly and the determination of major ore-forming elements constitute the major problem that geochemical researchers have to face. The ex-istence of the composite anomaly composed of more than ten elements makes the problem more complex. The adoption of the＆quot;contrast anomaly amount＆quot; parameter can quite simply help determine the major metallogenic elements and evaluate the anomaly so as to guide the ore-prospecting work. The practical application of this method to lead-zinc ore exploration in Liupan Mountain area shows that the determination of major elements in both regional geochemical anomaly and ore district anomaly is consistent with the drilling result. It is therefore held that this method is helpful to the determination of major elements in geochemical anomalies and hence deserves populari-zation.