The Cu-Ag-Pb Polymetallic Mineralization of Agdim-Ait Elfersi Sector, North-Eastern Part of the Saghro Massif, Morocco: Geological Setting, Ore Petrography and Geochemistry

Authors

  • Lahcen Ousaid LGEE Laboratory, Department of Earth sciences, Faculty of Sciences, Mohammed V- University Agdal, Rabat, Morocco
  • Youssef Hahou LGEE Laboratory, Department of Earth sciences, Faculty of Sciences, Mohammed V- University Agdal, Rabat, Morocco
  • Hassan Admou DLGR Laboratory, Department of Earth sciences, Somalia Faculty of Sciences, Cadi Ayyad University, Marrakech, Morocco
  • El Moustafa Mouguina DLGR Laboratory, Department of Earth sciences, Somalia Faculty of Sciences, Cadi Ayyad University, Marrakech, Morocco
  • Khadija Diani LGEE Laboratory, Department of Earth sciences, Faculty of Sciences, Mohammed V- University Agdal, Rabat, Morocco
  • Rachid Ziyadi Baraka Mining Company, Marrakech
  • Zineb Aafir LGEE Laboratory, Department of Earth sciences, Faculty of Sciences, Mohammed V- University Agdal, Rabat, Morocco
  • Said Courba LGEE Laboratory, Department of Earth sciences, Faculty of Sciences, Mohammed V- University Agdal, Rabat, Morocco
  • Aziza Lamchaimech LGEE Laboratory, Department of Earth sciences, Faculty of Sciences, Mohammed V- University Agdal, Rabat, Morocco

DOI:

https://doi.org/10.46717/igj.55.1A.1Ms-2022-01-20

Keywords:

Polymetallic mineralization, Agdim-Ait Elfersi, Saghro massif, Ag-Hg epithermal;, Late Neoproterozoic

Abstract

The Cu-Ag-Pb polymetallic mineralization of the Agdim-Ait Elfersi sector is situated in the eastern Anti Atlas Moroccan belt, northeastern part of the Saghro inlier. The mineralization is hosted in the volcanic rocks of late Neoproterozoic and the detrital sedimentary rocks of the Lower Cambrian. A network of faults has affected this area; it is a brutalizing deformation with NW-SE, NE-SW, E-W, and NNE-SSW directions. NW-SE and NE-SW structures have a metallogenic significance. This tectonic canvas was using as a target of a mineralization vein with Cu, Ag and Pb in this area. By combining geological, structural and metallogenic characteristics, it can be assumed that the Cu-Ag-Pb mineralization of the Agdim-Ait Elfersi sector is linked to two major events. A late Pan-African event linked to the extensional tectonic of the late Neoproterozoic, responsible for the establishment of mineralization at the level of the basement, and then a late Hercynian-Atlasic event, which manifests by the remobilization of metals in NE-SW oriented structures. Geochemical analysis shows the polymetallic character of this mineralization. The high contents of silver and mercury observed, indicate the presence of similarities of an Ag-Hg epithermal type of mineralization in this area. Geological context, as well as mineralogical and textural characters of the Agdim-Ait Elfersi sector are reminiscent of epithermal-type mineralization as in the Imiter and Zgounder deposit.

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Published

2022-01-21

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