The Bohemian magmatic complex belongs to granitoid plutons of the Central European Variscides. Hydrothermal uranium mineralization evolved in the small uranium deposits Nahošín and Mečichov is associated with N–S shear zones occurring on the SW margin of the Central Bohemian plutonic complex formed by amphibole-bearing biotite granodiorites of the Blatná suite. The purpose of presented study is description of uranium mineralization bounded on brittle shear zones, which is coupled with intense low-temperature hydrothermal alteration of granitic rocks. Uranium mineralization, formed predominantly of coffinite, rare uraninite, and thorite, is accompanied by intense hematitization, albitization, chloritization, and carbonatization of original granitic rocks that could be described as aceites. These alterations are accompanied by the enrichment in U, Ti, Mg, Ca, Na, K, Y, and Zr and depletion in Si, Ba, and Sr. The analyzed coffinite is enriched in Y (up to 3.1 wt % Y₂O₃). Uraninite is enriched in Th (up to 9.8 wt % ThO₂) and thorite is enriched in Zr (up to 5.7 wt % ZrO₂). The REE-elements are concentrated in the REE-fluorcarbonate synchysite-(Ce).

中文翻译：

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捷克共和国波希米亚中部深部复杂岩体的Blatná岩体中的类花岗岩和铀矿化

波希米亚岩浆复合体属于中欧Variscides的花岗岩类云母。在Nahošín和Mečichov小型铀矿床中演化出的热液铀矿化作用与由Blatná套房含闪石的黑云母花岗闪长岩形成的波希米亚中部深部复杂岩体西南边缘的N–S剪切带有关。本研究的目的是描述铀在脆性剪切带上的成矿作用，并伴有强烈的低温热花岗岩岩石热液蚀变作用。铀矿化主要由有限的，稀有的铀矿和苏铁矿形成，伴随着强烈的赤铁矿化，铝化，氯化和碳化作用，这些花岗岩可以被描述为aceite。这些变化伴随着U的富集，₂ O ₃）。铀红石富含Th（至多9.8 wt％的ThO ₂），铁矿富含Zr（至多5.7 wt％的ZrO ₂）。REE元素集中在REE碳酸盐合水合物（Ce）中。