甘肃柴家庄金矿床地球化学特征及矿床成因  

ORE-FORMING GEOCHEMISTRY AND GENESIS OF CHAIJIAZHUANG GOLD DEPOSIT,GANSU

作　　者：段永民[1] 余晓红[1] 王汉林 

机构地区：[1]甘肃省地质调查院,兰州730000 [2]甘肃省地质矿产局第一地质矿产勘查院,天水741020

出　　处：《地质与勘探》2006年第1期21-25,共5页Geology and Exploration

基　　金：中国地质调查局项目(编号:1212010330702)资助。

摘　　要：柴家庄金矿是石英脉型金矿床,产于花岗岩体旁侧、下古生界李子园群火山岩中;区域地球化学和矿区地球化学特征反映了火山岩和岩体为Au的高背景带。金—石英—多金属硫化物阶段是金的主要成矿阶段。3δ4S、1δ8O、δD及成矿温度和盐度等矿床地球化学特征均显示了岩浆热液活动是成矿的主导因素。同时,火山作用、区域变质作用、多期构造活动、大气降水等也参与了成矿。Chaijiazhuang gold deposit is a gold -bearing qnartz vein type, existing in the lower Paleozoic Liziyuan Group volcanic rocks beside the granitic intrusive. Regional and local genchemistry shows that volcanic and granitic rocks have higher gold background. Geochemistry parameters of δ^34 S, δ^18O, δD, mineralizing temperature, and salinity all exhibit that magmatic fluid activity is ore -forming dominant factor. Volcanism, regional metamorphism, multi - tectonic activity, and meteoric water also have participated in ore - forming process.

关 键 词：柴家庄金矿 火山岩 花岗岩体 元素分布特征 同位素特征 矿床成因 

分 类 号：P618.51[天文地球—矿床学]