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The aim of this work is to characterize clays of Middle Eocene age from the Ghoufi-Atlas Saharan region, Algeria, in order to know the fields of their use and their eventual valuation. To this end, an outcrop sampling campaign was carried out across these formations. The samples collected were analyzed by X-ray diffraction (XRD), X-ray fluorescence (XRF), and Scanning Electron Microscopy (SEM). Potential samples rich in clay fraction were further analyzed using laser granulometry, physicochemical tests, and copper adsorption recovery tests. The results showed that the clay fraction, which varies between 71 and 86%, are entirely represented Palygorskite, accompanied by 06–18% of dolomite, 03–7% of calcite, and traces of quartz as non-clay minerals. Further analysis showed that these clays have a cation exchange capacity (CEC) of 07 and 07.16 meq/100 g and a specific surface area (SS) of 57 and 60 m2/g. Copper adsorption tests have shown that fixation kinetics are very rapid and that these clays have a very high adsorption capacity.

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Mineralogical Characterization of the Eocene Clays in the Ghoufi Region “Saharan Atlas” Algeria

  • 会议论文

  • 发表日期：

    2025年

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  • Bachir Lamouri,
  • Abdellah Seddik Labadi,
  • Fouad Djaiz,
  • Adel Guettal,
  • Machati Boukoffa,
  • Ibtissem Chouaf,
  • Lakhdar Bouabsa,
  • Nathalie Fagel,
  • Abdelmadjid Chouabbi

摘要

The aim of this work is to characterize clays of Middle Eocene age from the Ghoufi-Atlas Saharan region, Algeria, in order to know the fields of their use and their eventual valuation. To this end, an outcrop sampling campaign was carried out across these formations. The samples collected were analyzed by X-ray diffraction (XRD), X-ray fluorescence (XRF), and Scanning Electron Microscopy (SEM). Potential samples rich in clay fraction were further analyzed using laser granulometry, physicochemical tests, and copper adsorption recovery tests. The results showed that the clay fraction, which varies between 71 and 86%, are entirely represented Palygorskite, accompanied by 06–18% of dolomite, 03–7% of calcite, and traces of quartz as non-clay minerals. Further analysis showed that these clays have a cation exchange capacity (CEC) of 07 and 07.16 meq/100 g and a specific surface area (SS) of 57 and 60 m2/g. Copper adsorption tests have shown that fixation kinetics are very rapid and that these clays have a very high adsorption capacity.