河北青龙三家子金矿床地质地球化学特征

三家子金矿床位于冀东金矿成矿带东部,F7断裂是三家子金矿床主干断裂,含金石英脉多呈"入"字型分布在F7断裂的上盘且成群出现,主要含金石英脉有7号、3号和2号。在采矿巷道采集了142件样品,通过对21种元素进行的R型聚类分析,结果表明:三家子金矿床最佳前缘晕指示元素组合为As、Sb、Hg;近矿晕指示元素组合为Au、Ag、Pb;尾晕指示元素组合为Co、Ni、W、Mn、Mo、Bi。进而确定了矿区最佳指示元素组合,成矿原生晕轴(垂)向分带序列。通过对原生晕数据处理分析,根据比值变化规律,提出三家子金矿床在深部还存在巨大找矿前景。

Geochemical characteristics of Sanjiazi Gold Deposit in Qinglong,Hebei

Sanjiazi Gold Deposit is located in the eastern part of East Hebei Gold Mineralization Belt. F7 fault is the major fault of Sanjiazi Gold Deposit. Gold-hosting quartz veins usually stretch in a "λ" shape in groups along the hanging wall of F7 fault. The main gold-hosting veins include No. 7,3 and 2. 142 samples are collected from mining roadways. 21 elements are analyzed by R type cluster analysis to determine the optimal combination of indicator ele-ments and the vertical zoning sequence of metallogenic primary halos. The results show that the optimal indicator ele-ments for front halos are As,Sb,Hg;Au,Ag,Pb for mineral halos;and Co,Ni,W,Mn,Mo,Bi for rear halos. Through processing and analyzing the primary halos data and by observing the ratio change rules,the paper thinks that this re-gion bears huge prospecting scope deep in Sanjiazi Gold Deposit.