This work is meant to study the variation of geochemistry and mineralogy of three salts recuperated from brines of the sebkha Oum El Khialate based on XRF, X-ray diffraction (XRD), and Fourier transform infrared (FTIR) analyses. Elemental analyses indicate enrichment with major element having an economic interest such as potassium. Compared to standards, minor elements analyses yield high concentrations of hazardous elements such as Cd and Cr, and represent a threat for human consumption. XRD and FTIR analyses display a variable mineralogy along the evaporation path including minerals that are specific for this sebkha, such as vaterite (CaCO₃), potassium pentasulphate (K₂S₅O₁₆), thenardite (Na₂SO₄), beryllium sulfate (BeSO₄), brucite (Mg(OH)₂), and mirabilite (Na₂SO₄·10 H₂O). The geochemistry and mineralogy of recuperated salts prove the relevance of the sebkha Oum Khialete as a potential ore resource to be used in industry and agriculture.

中文翻译：

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突尼斯东南部 sebkha Oum El Khialate 蒸发岩混合物的地球化学和矿物学

这项工作旨在基于 XRF、X 射线衍射 (XRD) 和傅里叶变换红外 (FTIR) 分析，研究从 sebkha Oum El Khialate 盐水中回收的三种盐的地球化学和矿物学变化。元素分析表明富含具有经济价值的主要元素，例如钾。与标准相比，微量元素分析会产生高浓度的有害元素，如 Cd 和 Cr，并对人类消费构成威胁。XRD 和 FTIR 分析显示了沿蒸发路径的可变矿物学，包括特定于这种 sebkha 的矿物，例如球霰石 (CaCO ₃ )、五硫酸钾 (K ₂ S ₅ O ₁₆ )、芒硝 (Na ₂ SO₄ )、硫酸铍(BeSO ₄ )、水镁石(Mg(OH) ₂ )和芒硝(Na ₂ SO ₄ ·10 H ₂ O)。回收盐的地球化学和矿物学证明了 sebkha Oum Khialete 作为用于工业和农业的潜在矿石资源的相关性。