470铀矿床地球化学特征及成矿机理探讨

Study on geochemical features and metallogenic mechanism of 470 uranium deposit

470火山岩型铀矿床主要有两种铀矿化类型 ,即铁—铀型和铀—钼型。含矿主岩主要为粗面岩 ,具有独特的“麻子构造” ;通过对矿床岩石化学、共生及伴生元素、稀土元素、稳定同素、成矿温度、成矿年龄等地球化学特征研究 ,分析了矿床的成矿机理 。

uranium deposit, a typical volcanic type deposit, can be divided into two kinds of mineralization,i.e.Fe-U type and U-Mo type.The main host rock is trachyte with distinctive pockmark structure. The deposit's metallogenic mechanism has been discussed and metallogenic model has been established on the basis of its geochemical features of petrochemistry ,paragenetic and accompanying elements,rare-earth elements,stable isotope,metallogenic temperature and age .