摘要
建立了热液型铀矿Pb同位素组成打靶方法。该方法主要包括研究勘查区不同类型岩石的204Pb、206Pb、207Pb、208Pb同位素组成、建立成矿208Pb/204Pb-206Pb/204Pb、208Pb/204Pb-207Pb/204Pb、208Pb/206Pb-207Pb/206Pb靶标范围及Ⅰ—Ⅳ共4个评级等级、实施测量剖面样品取样及Pb同位素组成分析、按Ⅰ—Ⅳ等级评价测量剖面测量点4个实施步骤。在桃山铀矿田大布矿床进行了方法有效性试验,结果表明该方法在区域上能够反映出矿化点或矿床的位置,是一种有效的土壤覆盖区范围区域热液型隐伏铀矿勘查方法。在该矿田王泥田地区进行了剖面勘查,预测王泥田东南部鱼成排及其附近为重点找矿有利区段。
A target tracing method for 204Pb,206Pb,207Pb,208Pb isotope composition of hydrothermal uranium deposits has been established.This method includes four main steps:studying the lead isotope composition of different types of rocks in the exploration area,establishing the range of 208Pb/204Pb-206Pb/204Pb,208Pb/204Pb-207Pb/204Pb,208Pb/206Pb-207Pb/206Pb isotope composition of metallogenic targets inⅠ-Ⅳgrades,sampling and analysis of isotope composition in the survey section and evaluating the samples accordingⅠ-Ⅳgrades range.The results of validity test in Dabu deposit of Taoshan uranium ore field showed that the method can reflect the location of mineralization point or deposit regionally,and it is an effective regional hydrothermal prospecting method for concealed uranium deposits in soil-covered areas.Profile exploration has been carried out in Wangnitian area of this ore field,and the Yuchengpai area and its vicinity in southeastern Wangnitian area are predicted to be favorable areas for uranium prospecting.
作者
刘汉彬
韩娟
金贵善
李军杰
张建锋
张佳
石晓
LIU Hanbin;HAN Juan;JIN Guishan;LI Junjie;ZHANG Jianfeng;ZHANG Jia;SHI Xiao(Beijing Research Institute of Uranium Geology,Beijing 100029,China)
出处
《世界核地质科学》
CAS
2019年第3期125-132,共8页
World Nuclear Geoscience
基金
国家重点研发计划项目“华南热液型铀矿基地深部探测技术示范”(编号:2017YFC0602600)和“相山大型铀矿田科学深钻Ⅱ期铀多金属深部探测研究”资助
关键词
热液型铀矿
隐伏矿床
桃山铀矿田
PB同位素组成
打靶法
hydrothermal uranium deposit
concealed deposit
Taoshan uranium ore field
Pb isotope composition
targeting method