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矿区具有由深大断裂交错带控制的块状构造。下部属地槽性质的构造层为晚元古-中古生代片麻岩、含石墨的千枚岩、片岩、花岗岩类,石炭-二叠纪含煤岩石和火山岩。地台阶段的地层总厚1,200m,为晚白垩纪的沉积物和早第三纪-晚第三纪的火山成因产物。在赛诺曼阶含水层岩石中广泛出现还原蚀变并发育有层状氧化带。矿床属于赛诺曼阶底部,为河流相、湖沼相、浅海-海相富含有
The mining area has a massive structure controlled by the deep and large faults. The structural belts of the lower tectonic trough are Neoproterozoic-Mesozoic gneiss, graphite-bearing phyllite, schist, granitoids, Carboniferous-Permian coal-bearing rocks and volcanic rocks. The stratum of platform stage total thickness 1,200m, for the Late Cretaceous sediments and Early Tertiary - Late Tertiary volcanogenic products. Reduced alteration occurs extensively in the Sene Numan aquifer rocks and develops layered oxidation zones. The deposit belongs to the bottom of the Seine Norman stage, and is characterized by river facies, lacustrine facies, and shallow sea-rich marine facies