Machine learning algorithms applied to Raman spectra for the identification of variscite originating from the mining complex of Gavà - Díez-Pastor, José Francisco; Jorge-Villar, Susana E.; Arnaiz‐González, Álvar; García‐Osorio, César Ignacio; Díaz‐Acha, Yael; Campeny, Marc; Bosch i Argilagós, Josep; Melgarejo, Juan Carlos ‎ (2020)