Bauxite, bauxite residues (BR) and Bayer Liquor are important resources for Al, Sc, V and Ga. Bauxite is currently the solely source for primary aluminium. At global scale about 80 plants produce alumina. From these resources, about 1 to 1.4 tonnes of bauxite residues are generated per tonne of alumina (Ujaczko et al. 2018). Bauxites present heterogeneous grades at lateral and vertical scale, variable mineralogy, and chemistry. Therefore, it is important to localize most precisely minerals hosting valuable metals for Al, Sc, V and Ga, but also hazardous minerals/metals for processing such as reactive silica (aluminosilicates), TiO2 (rutile, anatase), and minerals generating moisture (phyllosilicates). This must be done at the beginning of the value chain on mine sites to reduce transport and processing costs, and BR volumes. In this study, different types of sensors were applied to major lithologies of the karst bauxite deposits of SODICAPEI (Villeveyrac, Southern France), for optimal bauxite sorting. Therefore, the applicability of Laser-Induced Breakdown Spectroscopy (LIBS) was investigated with an industrial LIBS system and a LIBS core scanning system. Furthermore, first time-gated Raman and XRF spectroscopic analyses were performed with the multi-sensor ANCORELOG system.Our results, obtained in the frame of the EIT ANCORELOG and T-REX projects, show that LIBS is powerful to precisely define the bottom and top layer of bauxite ores and define the bauxite types by measurement of major and trace elements (Al, Mg, K, Na, Ca, C, Si, Ti, Fe, S). Furthermore, LIBS can access the critical parameters crucial for bauxite processing. XRF gives semiquantitative data for Mn, Fe, Cr, Ti, V, Ca, K while time-gated Raman spectroscopy allows deciphering clay minerals, Ti-minerals, boehmite and carbonates, all allowing defining bauxite on and offset.