胶东山后金矿床地质体微量元素特征及找矿意义

对胶东招平断裂上的山后金矿34个钻孔进行了原生晕测量,分析了Au、Ag、cu、Pb、zn、As、Sb、Bi、Mo、Hg等10种元素,统计了胶东岩群、荆山群、玲珑花岗岩及招平断裂蚀变带中微量元素含量及变化.变质岩、花岗岩均富Bi、Ag,而贫Hg、Sb、Au、Cu、zn、As;胶东岩群、荆山群中金的丰度值相近,它们均为金矿的矿源岩;在招平断裂蚀变带中Au、Ag、Pb、Mo、Bi等元素出现了明显富集,而Cu、zn、Sb、Hg等元素没有富集,矿床多金属硫化物阶段不发育;根据聚类分析结果,Au与Ag、Cu、Pb、zn生成于不同的成矿期,招平断裂中的Au矿体形成于金成矿期,招平断裂上盘荆山群地层中的Au、Ag、cu、Pb、Zn多金属矿体形成于金银多金属成矿期;招平断裂北段的成矿条件要比南段好;根据As、Mo元素含量的变化,确定出山后金矿深部矿体预测的简单准则,并对金矿深部进行了简单成矿预测.

TRACES ELEMENTS CHARACTERS AND SIGNIFICANCE IN ORE PROSPECTING IN THE SHANHOU GOLD DEPOSIT,JIAODONG PENINSULAR

Primary halo investigation of 34 drill holes has been carried out in the Shanhou gold deposit which hosted in Zhaoping fault zone,Jiaodong Peninsular.Au,Ag,Cu,Pb,Zn,As,Sb,Bi,Mo and Hg elements were analyzed.Statistics of trace elements contents and varitations of Jiaodong group,Jingshan group,Linglong granites and altered rocks in the Zhaoping fault zone show that metamorphic rocks and granites are rich in Bi and Ag while poor in Hg,Sb,Au,Cu,Zn and As.Gold contents in the Jiaodong group and Jingshan group a...