Abstract:On the basis of analyses of trace elements and REE from the sandstonetype uranium deposits in the Ordos Basin, the genesis of multiple energy resources and the formation of different ore deposits have been discussed in this paper. The high precision ICPMS analyse presents that the total REE amount ranges from 36.7 to 701.8 μg/g, manifesting that the contents of REE in mudstone samples is commonly higher than those of sandstone samples. The distribution patterns of the sandstonetype uranium samples characterize REE as enrichment in the light REE and depletion in heavy REE, showing the high Y abundance and abnormity of Eu between 0.30~2.5. The U abundances are 0.6~2204 μg/g, some strong correlation between U enrichment and the related elements, such as Ti, V, Zr, Mo, Au has been revealed by this study. This study presents a geochemical basis for understanding the relationships between U enrichments and other related elements.