山东金青顶金矿床的叠加晕模式  

SUPERIMPOSED HALO MODEL FOR JINQINGDING GOLD DEPOSIT IN SHANDONG PROVINCE

作　　者：李惠[1] 张文华[1] 郑涛 刘宝林[1] 刘振昌 

机构地区：[1]冶金部地球物理勘查院物化探研究所

出　　处：《矿产与地质》1998年第3期197-204,共8页Mineral Resources and Geology

摘　　要：金青顶为一大型石英脉型金矿床。１９８７年研究了－４００ｍ标高以上矿体原生晕特点，预测Ⅱ号矿体向下有很大延深，经钻探证实矿体延深到－７００ｍ，表明金青顶金矿床Ａｕ元素具有多中心富集和多阶段成矿成晕叠加特点，从而建立金青顶金矿床的叠加成矿成晕模式，表明在有Ａｕ异常存在条件下，Ａｓ、Ｈｇ、Ｓｂ前缘晕元素异常指示深部存在盲矿体；当前缘晕指示元素Ａｓ、Ｈｇ、Ｓｂ异常与尾晕元素Ｂｉ、Ｍｏ、Ｍｎ异常共存，指示矿体向下延深较大。－７００ｍ处叠加晕的显示，表明矿体仍向深部延伸，１９９７年钻探控制了－９００ｍ，矿体还未尖灭。Jinqingding gold deposit is a large scale deposit of quartz vein type.In 1987,the authors studied the features of the primary halo anomalies of the orebodies above -400m altitude,and predicted that Ⅱ orebody would stretch further downward,which was confirmed by drilling to be downward up to -700m altitude,and showed that gold was featured by multi-center enrichment and multi-stage mineralization and haloing.The studies also show that in the case of the existence of gold anomalies,the anomalies of front elements As,Hg,Sb may indicate the existence of hidden orebodies in the depth,and the occurrence of both the anomalies of front halo elements As,Hg,Sb and those of rear halo elements Bi,Mo,Mn may indicate relatively deep stretching of orebodies.The appearance of the superimposed halos at -700m altitude suggests further downward stretching of orebodies,as shown by the control of drilling up to -900m still without disappearance of orebodies.

关 键 词：金矿床 原生晕 叠加晕模式 山东 

分 类 号：P618.510.4[天文地球—矿床学]