摘要
灰池子岩体外围发育有黑云母伟晶岩、二云母伟晶岩和白云母伟晶岩3种类型的伟晶岩,对该区铀及三稀矿产具有重要的控制作用,但是对伟晶岩的含铀性因工作程度较低而缺乏系统研究。文章以灰池子岩体外围3种伟晶岩为研究对象,在系统分析不同类型伟晶岩的地质及放射性特征基础上,指出灰池子岩体外围黑云母伟晶岩、二云母伟晶岩和白云母伟晶岩的放射性强度依次减弱,其含铀性依次变差;黑云母伟晶岩是研究区最主要的富铀伟晶岩,是寻找铀矿的目标伟晶岩。通过对研究区富铀黑云母伟晶岩地球化学特征分析研究并与光石沟伟晶岩型铀矿进行系统对比,提出了研究区富铀伟晶岩的野外地质及放射性、矿物组合和地球化学找矿标志,且对指导该区铀矿进一步勘查具有一定的指导意义。
Three types of pegmatite,biotite pegmatite,two-mica pegmatite and muscovite pegmatite,are developed on the periphery of Huichizi pluton,which play an important role in the control of metallization of uranium,REE and rare metal in the area.However,due to its low working degree,there is no systematic study on its uranium-bearing property.This paper made a comprehensive and systematic analysis of the geological and radioactive characteristics of the pegmatites and found out that the radioactive intensity of biotite pegmatite,two-mica pegmatite and muscovite pegmatite in the periphery of the Huichizi pluton decreases in turn,therefor the biotite pegmatite is the uranium richest and can be regarded as the target host for uranium deposit.By systematically comparing the geochemical characteristics of biotite pegmatite around the Huichizi pluton to the pegmatite in the area of Guangshigou,the criteria to evaluate uranium￣rich pegmatite in field geology,radioactive intensity,mineral assemblage and geochemical prospecting has been proposed,which is of guiding significance to the further uranium exploration in this area.
作者
陈化凯
张盼盼
张同林
温国栋
莫鸿飞
曲凯
CHEN Huakai;ZHANG Panpan;ZHANG Tonglin;WEN Guodong;MO Hongfei;QU Kai(Henan Provincial Nuclear Geology,Zhengzhou,Henan 450044,China;Tianjin Center,China Geological Survey,Tianjin 300170,China)
出处
《铀矿地质》
CAS
CSCD
2020年第4期268-279,共12页
Uranium Geology
基金
中国地质调查局地质调查项目(编号:12120115014301、12120113075800)
河南省国土资源厅两权价款项目(编号:豫国土资发[2015]96号)
河南省核工业地质局局控科研项目(编号:2019001)联合资助。
关键词
灰池子岩体
伟晶岩
地质和放射性特征
铀矿
卢氏县
河南省
Huichizi pluton
pegmatite
geological and radioactive characteristics
uranium
Lushi country
Henan province
