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机构地区:[1]核工业270研究所,江西南昌330200 [2]江西省核工业地质局,江西南昌330046
出 处:《铀矿地质》2008年第2期101-107,共7页Uranium Geology
摘 要:桃山矿田产于桃山复式花岗岩体内,属花岗岩型铀矿,矿化类型主要为碎裂蚀变岩型。其良好的成矿地质条件主要有:(1)富铀的碳硅泥岩系基底;(2)发育于桃山岩体内的NE向脉岩充填构造带;(3)岩体内的碱交代蚀变带(体);(4)次级构造裂隙带;(5)燕山晚期第三阶段打鼓寨小岩体;(6)氧化还原过渡带;(7)较低的侵蚀程度。打鼓寨岩体及近外围特别是其东北部是进一步开展铀矿勘查工作的方向。Taoshan ore field occurs in Taoshan composite pluton, it is a granite typ uranium ore field, the main uranium mineralization is cataclastic-altered granite type. Favourable geological conditions of uranium metallization for this ore field are mainly as follows: (1) uranium-riched carbonaceous-siliceous- mudstone rock basement; (2) NE-striking dike filling structure belt developed in the batholith; (3) alkalic metasomatism in the pluton; (4) sub-structure of fissure belt; (5) emplacement of Daguzhai pluton in the third phase of the late Yanshan period; (6) oxidation-reduction transition zone; (7) lower erosion degree. The authors consider Daguzhai pluton and the near periphery, especially its northeast part, as the prospecting target for further exploration.
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