摘要
在鄂尔多斯盆地北东部砂岩型铀矿找矿中，一般将绿色蚀变砂岩作为古层间氧化带的识别标志。笔者通过对纳岭沟铀矿床绿色砂岩空间分布规律、铀矿化产出特征、矿物蚀变组合特征、岩石地球化学环境指标等因素进行综合分析，认为该铀矿床中的绿色蚀变砂岩不仅仅代表了古氧化环境，在古氧化带、氧化还原过渡带、原生带中均可出现不同色调的绿色砂岩。因此，正确识别不同蚀变带中的绿色砂岩，对盆地北东部砂岩型铀矿找矿工作具有现实指导意义。
Generally,the green sandstone was regarded as the classification criteria for the ancient inter-layer oxidation zone in the prospecting for sandstone type uranium deposits in northeastern Ordos ba-sin.Based on comprehensive analysis of spatial distribution law of green sandstone,the characteristic of uranium mineralization development,the characteristic of combination of mineral alteration and the geo-chemical environmental indicators of sandstone in Nalinggou uranium deposit,the authors believed that green color not only represent the ancient oxidizing environment,but also appeared in different ancient interlayer oxidation zone,the transitional zone and primary zone.It is of realistic direction significance to identify the green sandstone in different alteration zone correctly for the sandstone type uranium deposits prospecting in northeastern Ordos basin.
出处
《铀矿地质》
CAS
CSCD
2015年第A01期267-272,335,共7页
Uranium Geology
基金
中国核工业集团公司重点科技专项与国家高技术研究发展计划（863计划）项目（编号：2012AA061801）联合资助.
