Formation conditions and mineralization mode of uranium deposits in coal-bearing strata of China
The external dependence on uranium in China is as high as 78％,and the supply security is not optimistic.Coal-bearing uranium is an unconventional uranium resource,and its development provides a guarantee for the safe supply of ura-nium resources in China.In recent years,with the advancement of coordinated exploration of coal and uranium,several large coal-bearing sandstone-typed uranium deposits have been discovered in northern China,which provides a large amount of references for the exploration of coal-bearing uranium deposits in the future.The mineralization of coal-bearing uranium de-posits is a complex process,and current researches on coal-bearing uranium mineralization are relatively scattered,particu-larly that the occurrence and mineralization laws of uranium are not clear.In terms of the latest research achievements world-wide,this paper comprehensively elaborates on the genetic types,occurrence status,favorable conditions for mineralization,and mineralization modes of uranium deposits in coal-bearing strata.Moreover,it pointed that researches on coal-bearing u-ranium deposits in China is still insufficient,and there is an urgent need to strengthen research on the micro geological se-lection process of uranium,the mineralization time and stage of uranium deposits,in order to gain a deeper understanding and interpretation of the ore-forming mechanism of coal bearing-uranium deposits.Meanwhile,more attention should be paid to the genetic relationship between coal-rock uranium and sandstone uranium in the further research in the future.
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