Voragine Crater (Etna) Glass analysis June-Nov 2024

The dataset contains the glass analysis made on the samples collected from June to November 2024 monitoring activity. The Major elements determined by SEM-EDS in the INGV-OE laboratory (Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Etneo, Sezione di Catania). Analyses were performed with ZEISS EVO 15 scanning electron microscope equipped with an Oxford EDX micro-analytical system. Analytical conditions were acceleration voltage 20 kV, probe current 300 pA, beam current: 30 μA, WD= 13.5 mm, and XPP data reduction routine. In order to minimize alkalis loss during analysis, a square raster of 10 microns is used. The accuracy of our measurements has been checked through replicate analyses of the international standard VG-2 Glass basaltic, USNM 111240/52 (Jarosewich et al., 1980). The precision, expressed as relative standard deviation, is less than 1% for SiO2, Al2O3, FeO, MgO and CaO and less than 3% for TiO2, MnO, Na2O, K2O and P2O5 (Miraglia, 2012). The analyses have been performed in groundmass glass containing less than 15% microlites. Each measure is the average of 10 or more analyses.