纳岭沟地区铀成矿特征及成矿环境识别评价

Characteristics of uranium mineralization and identification evaluation on metallogenic environment in Nalinggou region

利用标本肉眼观察、镜下鉴定,配合扫描电镜、电子探针、电子显微镜以及主量、微量元素、有机炭、全硫、铀的价态和铀、钍同位素比(^(234)U/^(238)U、^(230)/^(232)h)值、烃类等各种分析,考虑黏土矿物种属比值和总量、V/(V+Ni)水体分层和底层水动力和硫化氢的厌氧、贫氧环境、氧化还原环境的Th/U比、盐度的Sr/Ba比、浸液的pH、Eh值等因素对纳岭沟地区铀成矿环境进行识别,对其成矿特点加以探讨,并提出具体找矿建议。

By specimens observation thin section microscopic identification, scanning electron microscopy, electron microprobe, electron microscope, and the analysis of main and trace elements, organic carbon, total sulfur, the valence state of uranium and thorium isotope ratio （234U/238u, 230Th/232Th） value, hydrocarbon and other analysis, the environment charater indicator of claymineral content and the ration between species, W（V＋Ni） water body-layering and bottom layering dynamics drive and hydrogen sulfide anaerobic, lean oxygen environment, Th/U of REDOX environment Sr/Ba ratio of salinity, pH of immersion, Eh identified. Metallogenic characteristics prospecting in Nalinggou region. value etc. factors, the ore-forming environment of uranium is of uranium are discussed and put forward proposal for