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一二二○铀矿田是受破火山口控制的火山岩型铀矿田。本文根据该矿田矿物中流体包体特征,均一、爆裂温度及成分数据讨论了成矿温度和沥青铀矿形成的化学环境与沉淀机理。一、地质概况一二二○铀矿田位于某中生代中酸性火山岩带的西南端,为一大型破火山口。基底为震旦系的中浅变质岩系和一部分上三迭至下侏罗的安源群煤系。盖层为上侏罗统火山岩系和白
The 1220 uranium ore field is a volcanic-type uranium ore field controlled by the caldera. Based on the characteristics of fluid inclusions, homogeneity, temperature and composition data of fluid inclusions in the ore, the chemical environment and precipitation mechanism of ore formation temperature and uraninite formation are discussed. First, the geological overview 1220 uranium ore field is located in a Mesozoic acidic volcanic belt southwest end of a large Caldera. The basement is the Sinian metaplastic metamorphic rocks and a part of the Anyuan coal measures of the Upper Triassic to the Lower Jurassic. The caprock is Upper Jurassic volcanic rock series and white