GNGTS 2021 - Atti del 39° Convegno Nazionale

123 GNGTS 2021 S essione 1.2 An) core-to-rim oscillatory zoning (OZp); 2) An-rich (70 and 85 mol%) rounded cores with coarse sieve textures (CS); 3) clear An-rich (70 and 85 mol%) rounded cores bounded by dissolution surfaces (DC); 4) Spongy sieve-textures of various widths (ST) commonly developed at the rim. For all the plagioclase types, iron varies in accordance with An, recording higher concentrations (up to 1.2 wt.%) across the disequilibrium textures. Olivine crystals were selected and grouped in Fig. 1 - (a): Digital elevation model of Mt. Etna with locations of seismic (dark square) and infrasound (open circle) stations, and lava flows relative to the eruptive episodes of May 30 – June 5, 2019, July 18-20, 2019 and July 27-28, 2019. (b): Sketch showing the eruptive activity for each summit crater from March 1, 2019 to June 1, 2020.