怀俄明州铜山铀矿区北坎宁铀矿床及周围的六个钻孔岩心分析表明,低温热液体系可以搬运和沉淀铀。铀见于太古代花岗岩的高度蚀变的角砾岩带和裂隙中,以及上覆的第三纪沉积物中。在角砾岩中钠蒙脱石总是围绕稳定的和次生的钾长石和石英形成基质。 Analysis of the North Cunningham uranium deposit in the Tongshan uranium area, Wyoming, and the six boreholes in the surrounding area show that low temperature hydrothermal systems can transport and precipitate uranium. Uranium is found in the highly altered breccias and fissures of Archean granites and in overlying Tertiary sediments. In breccia, sodium montmorillonite always forms a matrix around stable and secondary potash feldspar and quartz.