Exploring grain sizing of sedimentary calcareous rocks using Raman spectroscopyC. Indelicato, I. Osticioli, J. Agresti, D. Ciofini, A. A. Mencaglia, M. Perotti, C. Viti, R. Moreschi and S. SianoEur. Phys. J. Plus, 137 3 (2022) 359DOI: https://doi.org/10.1140/epjp/s13360-022-02536-7