胶西北金城金矿床蚀变岩石矿物研究

本文研究了金城金矿床蚀变岩石的常量元素和微量元素、蚀变矿物的金含量和化学组成，并首次对铁碳酸盐化及煌斑岩杏仁体的组成进行了研究。结果表明，形成不同类型金矿化的成矿流体组成有差异，但总体以富Fe、Si、K、Au、Ag、Bi、Co、Cu等为特征；黄铁矿为主要载金矿物，石英为金的洁净矿物；铁碳酸盐与黄铁矿黄铜矿的沉淀关系密切；煌斑岩岩浆晚期残余气液与成矿流体组成相近、沉淀次序相同，表明它们可能有成因联系。

STUDY ON ALTERED ROCKS AND MINERALS OF JINCHENG GOLD DEPOSIT,NORTHWESTERN JIAODONG PENINSULA

This paper studies the major elements and trace elements of altered rocks and the Au content and composition of altered minerals of Jincheng gold deposit and first studied the Fe carbonate and the amygdale in lamprophyre in this deposit.The conclusions are that the metallogenetic fluid is in general rich in Fe,Si,K,Au,Ag,Bi,Co and Cu etc.expect for their defference.Pyrite is the main Au bearing minerals but quartz is poor in Au.Fe carbonate is closely related to the precipitation of pyrite and chalcopyrite.The last remain fluid of lamprophyre magma is similar to metallogenetic fluid in composition and precipitating sequence,showing their genetic relationship.