七里山金矿山的岩石地球化学异常评价与找矿

在七里山金矿区开展了面积性岩石地球化学测量,圈定了4个金异常,其中2个是已知矿的反映,另2个是新发现的金异常。同时研究了已知金矿体的岩石、矿石和异常的元素特征,确定了矿床的指示元素以及元素分带序列,由此建立了异常评价指标。并对4个金异常进行了评价,认为2个新发现的金异常均有良好的找矿前景,提交了验证孔位。经4号金异常进行钻孔验证,在深部见到了富的金矿体。此次化探工作证明该金矿还有隐伏矿体存在,也证明利用岩石裂隙地球化学方法在危机矿山寻找隐伏矿是非常有意义的。

GEOCHEMICAL ROCK ANOMALY APPRAISAL AND ORE-PROSPECTING WORK IN THE QILISHAN "CRITICAL" GOLD MINE, SHANDONG PROVINCE

Based on areal geochemical rock survey in the Qilishan gold ore district,the authors delineated four gold anomalies,of which two are reflections of known ore deposits,whereas the other two are new gold anomalies.Element characteristics of rocks,ores,and anomalies for known gold ore bodies were also studied and,as a result,indicator elements and the element zoning sequence were determined,and the criteria for anomaly appraisal were established.Four gold anomalies were evaluated.Two newly-discovered gold anomalies were considered to be of good prospects,and locations of inspection drill holes were determined.Drilling test at No.4 gold anomaly discovered a rich gold ore body at depth.The geochemical exploration conducted by the authors demonstrate the existence of more concealed ore bodies in this gold mine,and also prove that the application of rock fissure geochemical method to the prospecting for concealed ore bodies in "critical" mines are of great significance.