In the Moroccan Anti-Atlas, sulfide deposits hosted by Neoproterozoic to Cambrian formations underwent significant weathering, leading to the formation of supergene profiles. In the Tazalaght Cu-As deposit, three mineralogical steps are distinguished: (1) the replacement of hypogene sulfides (chalcopyrite, pyrite, tennantite) by supergene sulfides (bornite, chalcocite) in the large cementation zone; (2) the formation of oxidized minerals (malachite, azurite, olivenite, and chenevixite, mainly) in a more oxidizing and neutral environment; and (3) the precipitation of goethite, hematite, and quartz in the gossan. In the Cu-As-Pb-V deposit of Agoujgal, the mineralogical units are spatially less confined than at Tazalaght. The narrow cementation zone hosts chalcocite, resulting from the weathering of hypogene chalcopyrite, pyrite, tennantite and galena, while the much more extended and diversified oxidized zone is rich in Cu and Pb carbonates, arsenates, sulfates, phosphates, vanadates, and oxides. Goethite, hematite, mottramite, and late calcite occur in the gossan. Both deposits are characterized by As-rich secondary ores that were formed through similar processes, despite some mineralogical and chemical variations highlighting the influence of the host rocks on weathering. The restricted oxidized mineralization at Tazalaght and the Agoujgal cementation zone most likely arise from the contrasting omnipresence of quartzite at Tazalaght that could not enable a fast and effective neutralization of the fluid’s acidity, and the large amounts of dolomitic host rocks that could be dissolved at Agoujgal. At both sites, the weathering of tennantite through a boxwork texture records the transition from the cementation zone (chalcocite), the oxidized zone (arsenates), and the gossan, and reflects the fluids evolution with time.

中文翻译：

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富含As-Pb的超矿成因：Tazalaght和Agoujgal铜矿床（摩洛哥反阿特拉斯铜矿带）

在摩洛哥的“反图集”中，新元古代至寒武纪地层的硫化物矿床经历了明显的风化作用，从而形成了超基因剖面。在塔扎拉格特（Tazalaght）铜-砷矿床中，区分了三个矿物学步骤：（1）在较大的胶结带中，用表生硫化物（斑脱石，黄铜矿）代替次生硫化物（黄铜矿，黄铁矿，球铁矿）；（2）在更具氧化性和中性的环境中形成氧化性矿物质（主要是孔雀石，石青石，橄榄石和钙铝石）；（3）针铁矿，赤铁矿和石英在釜山中的沉淀。在Agoujgal的Cu-As-Pb-V矿床中，与塔扎拉格特矿区相比，矿物学单元的空间限制较小。狭长的胶结带中存在辉绿岩，这是由次生黄铜矿，黄铁矿，钙云母和方铅矿，而更广泛和多样化的氧化带则富含铜和铅的碳酸盐，砷酸盐，硫酸盐，磷酸盐，钒酸盐和氧化物。针铁矿，赤铁矿，硅镁石和晚方解石都存在于戈山中。这两种矿床的特征都是通过相似的过程形成的富砷二次矿石，尽管某些矿物学和化学变化突出了主岩对风化的影响。Tazalaght和Agoujgal胶结带的有限氧化矿化很可能是由于Tazalaght石英岩的对比无处不在，无法快速有效地中和流体的酸度，以及大量的白云质基质岩石可在Agoujgal溶解。在两个站点上