摘要
为研究青龙铀矿田铀矿物特征,通过岩矿测试、放射性照相、X射线粉晶分析和电子探针分析等方法,对矿田中铀矿石的铀存在形式、结构构造、化学组成进行了研究。结果显示,铀以吸附、单矿物、铀酰络合物形式存在,形态有超显微粒状、显微粒状、似细脉状三种。沥青铀矿富集Th、TREE等,而其他化学成分如H2O、SiO2、Pb等的含量,因不同矿床而差异明显。铀矿石中沥青铀矿为主要铀矿物,其成分单一,铀含量均较高,但433矿床和434矿床中沥青铀矿Pb含量相差很大,反映了该矿田存在多物源、多成矿作用。本研究成果为铀矿选冶及铀成矿研究提供依据。
In order to study the characteristics of uranium minerals in Qinglong uranium ore field,the measures of rock and mineral compositions,radioactive photography,X-ray powder diffraction and electron microprobe analyses are used to reveal uranium occurrence,textures,structures,and chemical compositions of ore in the uranium ore field.The results show that uranium mainly occurs in the form of absorption,individual mineral and uranyl complex.Uranium mineral exists in the shapes of super-micro-grain,micro-grain and veinlets-like.Th and TREE are rich in the pitchblende,but other chemical compositions such as H2O,SiO2 and Pb are different in different deposits.As the main uranium mineral in the ore field,pitchblende contains single component and high uranium content.But pitchblende from the No.433 and No.434 deposits have quite different Pb contents,which reflects multi-sources,multi-phase and multi-stage mineralization.This research findings can provide important evidence for uranium metallogenesis and uranium ore dressing and smelting.
作者
郭永强
张振强
张旭康
达朝元
GUO Yong-qiang;ZHNAG Zhen-qiang;ZHANG Xu-kang;DA Chao-yuan(Geological Party 243,CNNC, Chifeng 024000, China;Research Institute 240 of Nuclear Industry, Shenyang 110032, China)
出处
《东华理工大学学报（自然科学版）》
CAS
2020年第3期223-230,共8页
Journal of East China University of Technology(Natural Science)
基金
中国核工业地质局项目(201801)。
关键词
青龙铀矿田
铀矿物
多阶段成矿
Qinglong uranium ore field
uranium mineral characteristics
multistage mineralization
