Discussion on the Distribution Pattern of Rich Volcanic Uranium Ore Bodies in the Middle Section of Ganhang Uranium Metallogenic Belt
In the middle section of Ganhang uranium metallogenic belt,7 uranium deposits and many uranium occurrences and prospects have been discovered mainly in Shengyuan,Tiantaishan,Ergongshan and Tongfan volcanic basins.In this paper,the distribution pattern of rich ore bodies was studied,it was pointed out that the intersection of the main basin-controlling fractures and the ring volcanic edifices at the edge of the basin were the favorable places for the formation of rich uranium ore bodies.The rocks with large effective porosity are the favorable ore-hosting rocks.The rich uranium ore bodies have experienced at least two phases of uranium mineralization,and the mineralization related to late purplish-black pyrolytization is the key to producing rich ore bodies.Uranium rich ore bodies are often formed when the structural complex,large porosity rocks and late purplish-black pyrofluorite are developed together.It was proposed that Sanking-Shengyuan area in Shengyuan volcanic basin and Wangshishangang-Jiangjiafan area in Tiantaishan volcanic basin are favorable areas for prospecting rich uranium ore bodies,and can be regarded as next focus for uranium prospecting.
rich ore bodiesvolcanic edificedistribution patternmineralization characteristicsmiddle section of Ganhang uranium metallogenic belt
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