龙首山铀成矿带成矿规律与成矿模式

METALLOGENIC REGULARITIES AND MODELS OF LONGSHOUSHAN URANIUM METALLOGENIC BELT

龙首山成矿带查明有两个重要的铀成矿系列:与中条期混合岩化、岩浆作用有关的多阶段、多来源、复成因铀成矿系列,及与加里东晚期花岗岩浆演化有关的铀成矿系列。前者产出伟晶白岗岩型铀矿床,后者产出钠交代型和硅质脉型铀矿床。它们是该区地壳发展演化特定阶段的产物,成矿作用与花岗岩浆、热液演化及围岩条件关系密切,矿化在空间上受不同级别构造控制。

In Longshoushan metallogenic zone two important uranium metallogenic series have been identified: the metallogenic series of multistage, multisource and polygenesis related with the migmatization and magmatism in Zhongtiao period; and the metallogenic series related with the evolution of the granite magma in late Caledonian period. During the former period uranium deposits of the pegmatoidal alaskite type occurred. During the latter one uranium deposits of the sodium metasomatic type and silicic vein type occurred. These deposits are originated from the special stage of development and evolution of the Earth crust in this area. Uranium metallogenesis is closely related with the evolution of granite magma, hydrothermal solution and the condition of the wall rocks. uranium mineralization in space are controlled by the structures of different orders.