摘要
蒙其古尔铀矿床是伊犁盆地南缘可地浸砂岩型铀矿田的重要组成部分,自西向东划为西段、中段、东段3个地段,不同地段矿体形态和规模又存在显著差异。文章通过野外地质调查和钻孔资料分析,研究了西山窑组下段不同地段砂体的规模、厚度、粒度变化以及不同构造条件下氧化带发育规模、层间氧化流体运移关系、地球化学障等差异性,并对不同地段矿体差异性进行了对比分析,认为构造样式决定着矿体展布,含矿砂体展布与矿体连续性密切相关,矿体空间形态受控于层间氧化流体差异性,还原介质含量的差异与铀矿化的富集强度存在明显的正相关性。
Mengqiguer uranium deposit is an important part of the sandstone uranium ore-field in the southern margin of Yili Basin.The deposit is divided into the west sector,middle sector and east sector.The shape and scale of the ore bodies in different sector are quite different.By comparing the ore body with the field geological survey and drilling data,their difference in the size and thickness of hosting sand body,particle size of hosting sandstone,scale of oxidation zone,fluid migration and geochemical barrier related to structural condition,the structural patterns was found the main influence factor controlling the ore body shape,the ore body continuity was closely related to sand body distribution and shaped by the interlayer fluid difference,the content difference of reluctant medium was positively correlated to the enrichment degree of uranium mineralization.
作者
张浩浩
张虎军
王守玉
王福东
邬力生
ZHANG Haohao;ZHANG Hujun;WANG Shouyu;WANG Fudong;WU Lisheng(Geologic Party No.216,CNNC,Urumqi,Xinjiang 830011,China)
出处
《铀矿地质》
CAS
CSCD
2023年第5期770-779,共10页
Uranium Geology
基金
中国核工业地质局项目“新疆伊犁盆地及周边地区砂岩型铀矿资源调查评价与勘查”(编号:202205)资助。
关键词
蒙其古尔铀矿床
砂岩型铀矿
西山窑组下段
矿体差异性
主控因素
Mengqigur uranium deposit
sandstone type uranium deposit
lower member of Xishanyao Formation
ore body difference
control factor
