Lithium (Li) is a critical metal for global development and modern energy. Emerging sediment hosts, which contain karst-type bauxite deposits, afford a potential source of Li resources. Iran has no history in occurrence of bauxite-hosted Li deposits and no investigations have done. Therefore, that leads to the importance of further research and exploration on these deposits. In this investigation, the samples of Jajarm bauxite were analyzed by combination of X-ray diffraction (XRD), petrographic and scanning electron microscopy–energy-dispersive spectroscopy (SEM–EDS), inductively coupled plasma mass spectrometry (ICP-MS), and X-ray fluorescence (XRF) techniques, with the aims to investigate the distribution and enrichment of the Li. The results show that Li concentrations in Jajarm bauxite deposit range from 91 to 1192 ppm. The maximum Li concentrations occur in shaly bauxite samples. Oolitic bauxite mainly consists of diaspore and chamosite, with small amounts of anatase and boehmite. Shaly bauxite dominantly consists of kaolinite, diaspore with small amounts of mica, quartz, and anatase, and kaolinitic bauxite predominantly consists of kaolinite. Kaolinite, diaspore, anatase, and mica minerals were identified by SEM–EDS analysis. Independent Li minerals were not found in mineralogical analysis. The correlation coefficient of Li with other mineralogical and geochemical parameters shows that kaolinite and mica are the most likely host minerals of Li in the studied bauxites. Therefore, Jajarm bauxite deposit, located in northeastern Iran, serves as a bauxite resource and an independent Li resource, making it valuable for development and utilization.

锂（Li）是全球发展和现代能源的关键金属。新兴的沉积物主体含有岩溶型铝土矿矿床，提供了潜在的锂资源来源。伊朗没有发现铝土矿锂矿床的历史，也没有进行任何调查。因此，这导致对这些矿床进行进一步研究和勘探的重要性。在这项研究中，通过结合 X 射线衍射 (XRD)、岩相和扫描电子显微镜-能量色散光谱 (SEM-EDS)、电感耦合等离子体质谱 (ICP-MS) 和X射线荧光（XRF）技术，旨在研究锂的分布和富集。结果表明，Jajarm 铝土矿矿床中的 Li 浓度范围为 91 至 1192 ppm。最大锂浓度出现在页岩铝土矿样品中。鲕粒状铝土矿主要由水铝石和绿铜矿组成，含有少量锐钛矿和勃姆石。页岩铝土矿主要由高岭石、水硬铝石和少量云母、石英和锐钛矿组成，高岭石铝土矿主要由高岭石组成。通过 SEM-EDS 分析鉴定出高岭石、水铝石、锐钛矿和云母矿物。矿物学分析未发现独立的锂矿物。Li与其他矿物学和地球化学参数的相关系数表明，高岭石和云母是所研究的铝土矿中最可能的Li宿主矿物。因此，位于伊朗东北部的Jajarm铝土矿矿床既是铝土矿资源，又是独立的锂资源，具有开发利用的价值。