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Study on Uranium Occurring State in Hadatu Sandstone-type Uranium Deposit in Erlian Basin
Author(s): 
Pages: 20-27
Year: Issue:  1
Journal: Uranium Geology

Keyword:  二连盆地砂岩型铀矿哈达图赛汉组上段铀的赋存状态;
Abstract: 二连盆地哈达图铀矿床是近年来发现的大型可地浸砂岩型铀矿床,研究该矿床铀的赋存状态直接关系到铀的矿床成因研究及地浸开采,具有重要意义.通过电子探针、扫描电镜、α径迹蚀刻等分析方法研究哈达图矿床铀的赋存状态,结果表明,铀主要以超显微状(粒径<1 μm)、显微状(粒径1~1.5 μm)铀矿物及其集合体形式吸附在黏土矿物、黄铁矿及有机质表面.识别出的铀矿物有沥青铀矿、铀石、铀的磷酸盐,另有部分超显微状铀矿物因粒径较小而无法定名.此外,还有少量铀以含铀矿物形式存在如含铀稀土矿物、独居石、锆石、钍石等.
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