Elemental Chemical Analysis by X-ray Fluorescence of Calcarenite Stones Used in Historical Monuments Building of Rabat (Morocco)Y. El Rhaffari, M. Hraita, A. Rahmouni, A. Samaouali, M. Boukalouch and Y. GeraudMATEC Web Conf., 149 (2018) 02057DOI: https://doi.org/10.1051/matecconf/201814902057