1. Laboratory of Technological and Functional Analyses of Prehistoric Artefacts (LTFAPA)Sapienza University of Rome Piazzale A. Moro 5 I‐00185 Rome Italy
2. CNR Istituto di Cristallografia, Area della Ricerca Roma 1, Via Salaria Km 29 I‐300‐00015 Monterotondo Stazione (RM) Italy
3. Department of Earth SciencesSapienza University of Rome Piazzale A. Moro, 5 I‐00185 Rome Italy