期刊论文

中文

高校地质学报

1006-7493

2018

24

2

185-199

10.16108/j.issn1006-7493.2017080

中核集团项目“南方重点花岗岩型铀矿基地资源预测和扩大,2016~2018年” 中国地质调查局项目“整装勘查区找矿预测与技术应用示范,2014~2016年”(12120114052401)联合资助

本校为第一机构

沙子江矿床外围某钻孔不同矿化蚀变位置具有U含量与SiO_2、CaO、Fe_2O_3、LOI、HREE含量正相关、Na均消失殆尽、稀土和微量元素配分型式相似、LREE呈较富集的右倾特征。与新鲜围岩相比,蚀变围岩Sb、U明显增高,Ni、W略有增加;与新鲜围岩和蚀变围岩二者相比,碎裂花岗岩(矿石)中Cd、Sb明显增高,W、Ni、Pb略有增加,Be、Bi明显减少;相对于新鲜围岩,碎裂花岗岩(矿石)和蚀变围岩分别表现出Sb、U和Sb、Cd、U明显增高,共同表现出W、Ni略有增加的特征。矿化蚀变带元素迁移研究表明,矿化蚀变带样品Sb、LOI、CaO、Ni、Cu、In、Sr均迁入,Na_2O、FeO、Be、 Cs、Th、Nb均迁出,迁入率最大的组分均为Sb,迁出率最大...

The uranium content has positive correlations with the abundance of SiO_2, CaO, Fe_2O_3, LOI and HREEs and Na is almost depleted at the mineralization and alteration positions of a drill core in the Shazijiang uranium ore-deposit. In trace element spider diagram and REEs distribution pattern diagram, the shapes of different mineralized and altered belt samples are very similar. The REEs distribution pattern shows that LREEs are enriched and the distribution lines are lean to right. Compared with the fresh surrounding rocks, the altered surrounding rocks have elevated Sb and U concentrations an...