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Exploitation of mineral resources in steady primary ore deposits inevitably generates waste in large quantities. This waste sometimes occupies large areas and causes environmental risks but also offers economic opportunities. Mine waste can thus contain economical concentrations of chemical elements, in particular the so-called critical metals whose ever-increasing demand requires the search for new deposits. An example is the consolidated mining tailings from artisanal gold mining in the Bétaré-Oya gold district. Their mineralogical and geochemical studies reveal significant concentrations of Zr, V, Cu, Zn, Sr, Li, Cr, Co, Pb, Ag, and REEs distributed in primary silicate minerals, newly formed secondary minerals and accessory minerals. Consequently, well-regulated mining integrating the concepts of waste valorization and circular mining system could be more profitable industrially, economically, and environmentally.

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Valorization of Mine Wastes as Potential Secondary Sources of Critical Metals—Part 1: Geochemistry and Mineral Associations by Using the Consolidated Mining Tailings of the Bétaré-Oya Gold District (Lom Series, East-Cameroon) as Case Study

  • 会议论文

  • 发表日期：

    2025年

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  • Idriss Franklin Tiomo,
  • Franck Romaric Kouahou Tchihou,
  • Marcel Vouffo,
  • Tatiana Kamga Djoumen

摘要

Exploitation of mineral resources in steady primary ore deposits inevitably generates waste in large quantities. This waste sometimes occupies large areas and causes environmental risks but also offers economic opportunities. Mine waste can thus contain economical concentrations of chemical elements, in particular the so-called critical metals whose ever-increasing demand requires the search for new deposits. An example is the consolidated mining tailings from artisanal gold mining in the Bétaré-Oya gold district. Their mineralogical and geochemical studies reveal significant concentrations of Zr, V, Cu, Zn, Sr, Li, Cr, Co, Pb, Ag, and REEs distributed in primary silicate minerals, newly formed secondary minerals and accessory minerals. Consequently, well-regulated mining integrating the concepts of waste valorization and circular mining system could be more profitable industrially, economically, and environmentally.