新疆511铀矿床微量元素富集特征研究

Trace element geochemistry of No. 511 uranium ore deposit in Xinjiang

通过对砂岩铀矿体及其围岩中的Se、Re、Ga、Ge、V、Mo和U等元素的测试与分析,文章系统研究了511砂岩型铀矿床中主要微量元素的富集特征。结果表明:511铀矿床中,Se、Re、Ga、Ge、V、Mo等微量元素存在不同程度的富集,其中Se、Re、Ga的富集达到综合利用工业品位;微量元素空间分布受层间氧化带控制且具有规律性,沿层间氧化作用方向,依次出现Se_Re(+Ge)_Mo_V等分带;Re与U具有较好的相关性,Se、Re元素对砂岩铀矿找矿具有重要指示意义。511铀矿床是一个与层间氧化带有关的多元素聚集的复合矿床。

Systematical studies of main and trace element geochemistry indicate that the No. 511 uranium ore deposit in northwestern China is a ,sandstone type composite ore deposit characterized by multi-element enrichment. Se, Re, Ga, Ge, V and Mo are concentrated to different extents in this deposit, of which Se, Re and Ga are of economic significance.Se-Re （ ＋ Ge）-Mo-V and other zones of these trace elements are recognized successively in the development direction of interlayer oxidation. Integration of these trace element data further shows that there exists a positive correlation between U and Re, suggesting that Re and Se may be important indicators of uranium ore deposits.