辽宁金家金矿元素地球化学特征研究

通过相关系数和旋转因子分析认为,金家金矿Au、Bi、Ag为主要成矿元素,Au与Bi关系密切(正相关),Au与Co呈负相关。Au、Ag、As、Bi、Hg、Mo、Sb是找矿指示元素。在矿体与围岩的界面处,大部分元素如Cu、Pb、Zn等都显示异常,为围岩中的元素受深熔、变形作用向构造区运移在断裂带两侧集中的结果,对金成矿起到一定的作用。金家矿床不同地段原生晕组合不同,刘屯(Ⅰ)原生晕为两套组合,即矿体晕和矿尾晕;金屯(Ⅱ)原生晕为三套组合即矿上晕、矿体晕、矿尾晕。运用元素组合特征,分析剥蚀水平,可有效指导下一步找矿。

Study on Features of Element Geochemistry of Jinjia Gold Deposit in Jinxian County of Liaoning Province

Based on analyzing of correlation coefficients and rotation factors, some results are concluded. Au,Ag and Ag are main metallogenic element in Jinjia gold deposit. Au is closely positive correlation with Bi,while it is negative correlation Co. Au,Ag,As,Bi,Hg,Mo and Sb are indicating elements for gold prospecting. Most elements such as Cu,Pb and Zn often suggest an abnormality on contact interface between ore body and country rock. There resulted from elements concentration in country rock on two sides of faults due to their migration toward tectonic zone by anatectic melting and deformation, which play important role in gold mineralization. Different sections have different primary halo element association. Two sets of association(ore body hole and ore tailing hole ) develops in Liutun area and three sets of association(ore surface halo, ore body hole and ore tailing hole) occur in Jintun area. Using element association to analyze denudation level can guide next gold prospecting effectively Jinjia area.