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Alkalic mantle fluids and uranium ore-formation in Zhuguang and Guidong granitic massifs
Author(s): 
Pages: 210-219
Year: Issue:  4
Journal: URANIUM GEOLOGY

Keyword:  钾质交代系列钾钠混合交代系列烃碱流体成矿诸广、贵东花岗岩体;
Abstract: 本文论述了粤北诸广、贵东花岗岩中年龄大于100 Ma的两种早期铀矿化特征,并对这两种早期铀矿化进行了对比.第一期铀矿化与碱交代-云英岩化有关,属钾质交代系列;第二期铀矿化与碱交代-绿泥石化有关,属钾、钠混合交代系列.同时,阐述了它们与晚期(小于100 Ma)硅化带类型铀矿化的差别,指出早期铀矿成矿与硅化带无关.在此基础上,用烃碱流体成矿理论对两种早期铀矿化的成因进行了分析.
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