The database consists of 1830 analyses of clinopyroxenes (1206 EMP and 624 LA-ICPMS) and 1600 analyses of olivines (965 EMP and 635 LA-ICPMS) from fourteen pumice, three scoriae and eight lava samples belonging to the Somma-Vesuvius activity of the last 33,000 years. The analysis methods used are Electron-microprobe (EMP) and Laser ablation – inductively coupled plasma – mass spectrometry (LA-ICP-MS). This study has been carried out as part of the “Faro 2011” project and was financed by: 1) the University of Napoli "Federico II"; and 2) the Arc Centre of Excellence in Ore Deposits “Codes” of the University of Tasmania. The research was financially supported by the PRIN 2010-2011 grant (Prot. 2010PMKZX7).