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根据层间氧化带型砂岩铀矿的矿化富集与铀镭平衡变化特征，在西北层间氧化带型砂岩铀矿床运用地面放射性氡法———２１８Ｐｏ 测量方法进行了找矿试验，试验表明运用２１８Ｐｏ 测量结果曲线来圈定层间氧化带中铀矿化富集部位是可行和有效的。
According to the characteristics of mineralization and enrichment of interlayer oxidation zone sandstone uranium deposits and the characteristics of uranium-radium balance, the ore-prospecting experiment was conducted in the Northwest interlayer oxidation zone sandstone uranium deposit by radioactive radon method --- 218Po measurement method. It is feasible and effective to delineate the enriched uranium mineralization sites in the interlayer oxidation zone by using 218Po measurement results.