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捷克铀矿业在历经44a的区域地质详查和铀矿研究的基础上,今天已基本掌握了波希米亚地块的特征。 在波希米亚地块铀富集的过程中,华力西构造运动是基础;反过来,铀的富集程度也相应地反映了波希米亚地块各个成矿带华力西构造活动的强度,其中包括:Saxo-Thuringian区、Barrandian-Zelezne hory区、Sudetic区和Moldanubian区。 本地块的内生热液铀矿床产于结晶岩中,以矿脉或矿带形式产出,主要成分为:石英-碳酸盐-沥青铀矿、硫化物-沥青铀矿和钠长石-绿泥石-水硅铀矿-水云母等矿物组合,外生铀矿床产于沉积岩中。 研究还发现,波希米亚地块铀富集的空间分布与地壳深断裂和华力西酸性花岗岩类的深成岩体有关,主要铀矿化就在这些岩体的外接触带富集,且成矿年龄较早,相当于晚华力西期和基米里阶期(Kimmerian),而外生铀矿成矿年龄相当于晚由垩世到中新世。 本文主要通过波希米亚地块93个内生成因铀矿体的样品分析,阐述铀成矿的地球物理和地质参数特征。
The uranium mining in Czech Republic has basically mastered the characteristics of the Bohemia block today on the basis of the 444 regional geological survey and uranium research. In the process of enrichment of uranium in the Bohemia block, the Variscan tectonic movement is the basis; in turn, the enrichment of uranium also correspondingly reflects the structure of the Variscan tectonics in each metallogenic belt of the Bohemia block Including the Saxo-Thuringian, Barrandian-Zelezne hory, Sudetic and Moldanubian districts. The endogenous hydrothermal uranium deposits in this block are produced in crystalline rocks and are produced in the form of veins or ore belts. The major components are quartz-carbonate-bitumen uranium deposits, sulfide-bitumen uranium deposits and albite- Chlorite - hydrous silicon uranium - water mica and other mineral assemblages, exogenous uranium deposits produced in sedimentary rocks. The study also found that the spatial distribution of uranium enrichment in the Bohemia block is related to deep crustal crustal and deep plutons in the Huali acid acidic granitoids. The main uranium mineralization is enriched in the outer contact zones of these plutons, The ore age is earlier, corresponding to the Late Warring West and Kimmerian epochs, while the age of exogenous uranium mineralization corresponds to the Late Cretaceous to the Miocene. In this paper, we mainly analyze the geophysical and geological parameters of uranium mineralization through the analysis of 93 endogenous uranium ore samples in the Bohemia block.