High resolution spectrometers combined with low detection limits for light elements make handheld LIBS a powerful option to detect critical elements. The LIBS spectra dataset combined with the Li content dataset can be used to obtain quantitative estimation of Li in. Researchers used SciAps Z-300 LIBS to provide over 4,000 spectra on lithium-content materials, including minerals, powder pellets, and rocks. This data paper provides more than 4000 LIBS spectra obtained using a handheld LIBS tool on approximately 140. The Handheld LIBS Lithium Analyzer is an advanced spectral analysis tool that integrates laser-induced breakdown technology and spectral analysis methods. With its portability, user-friendliness, rapid analysis speed, minimal destruction, and broad range of testable elements, it offers an. Abstract: Lithium (Li) is one of the latest metals to be added to the list of critical materials in Europe and, thus, lithium exploration in Europe has become a necessity to guarantee its mid- to long-term stable supply. SciAps has developed the LIBS (laser) Z-901 Lithium analyzer, purpose-built for measuring Li in rocks and brines, and Z-902 Lithium analyzer with an extended spectrometer range, for those users who need to additionally. lop a lithium quantification model specifically for mineral process ls, both in general geological areas and within the ranite (Allier, France)35–37. A direct Li assay metho te-lepidolite series can have i ineral phases, to assess the robustness of indirect Li measurem an con ributio for t e.