The MVT Pb–Ba mineralizations of the Mibladen ore deposit are hosted by Jurassic carbonates as well as Infracenomanian conglomerates and sandstones. The mineral paragenesis is mainly composed of galena and barite with lesser chalcopyrite and pyrite, accompanied by supergene oxidation minerals. This ore deposit is the result of a major epigenetic mineral stage with economic orebodies occuring as replacement of pre-existent carbonate rocks, fillings of karst cavities, interstratal joints, collapse-breccias, fractures, and faults. Structural and microtectonic analyses we carried out in this ore deposit, allowed us to highlight two main fracture networks controlling ore deposition within karst cavities and interstratal joints: (i) NNW-SSE to NNE-SSW trending tension gashes and normal faults; (ii) ENE-WSW to E-W trending reverse faults with strike-slip components and transtensive relay zones. All of these structures are developed under a regional compressional tectonic regime divided into extensional and transtensional episodes (σ1–σ2 and σ2–σ3 permutations) with sub-meridian σ1 axis and sub-equatorial σ3 axis. This compressive tectonic event caused the uplift of Mibladen area and favored the circulation of mineralizing fluids along the NE-SW and ENE-WSW major faults such as Aouli and Amourou Faults, during the Infracenomanian period (Upper Jurassic–Early Cretaceous).

Mibladen矿床的MVT Pb-Ba矿化作用由侏罗纪碳酸盐以及Infracenomanian砾岩和砂岩共同控制。矿物共生主要由方铅矿和重晶石以及较少的黄铜矿和黄铁矿组成，并伴有超基因氧化矿物。该矿床是主要表生矿物阶段的结果，经济矿体的发生是由于替换先前存在的碳酸盐岩，岩溶腔的充填，层间节理，崩塌角砾岩，裂缝和断层。我们在该矿床中进行了结构和微构造分析，使我们能够重点介绍控制岩溶腔和层间节理内的矿石沉积的两个主要裂缝网络：（ii）ENE-WSW到EW趋向于具有走滑组件和跨层传递带的反向故障。所有这些结构都是在区域压缩构造构造条件下发育的，该区域被分为子午线σ1轴和赤道下σ3轴的伸展和跨伸展事件（σ1-σ2和σ2-σ3排列）。在Infracenomanian时期（侏罗纪-早白垩世），这种压缩构造事件引起了Mibladen区域隆升，并促进了NE-SW和ENE-WSW重大断层（如Aouli和Amourou断层）沿矿化流体的循环。