Mount Etna in NE Sicily occupies an unusual tectonic position in the convergence zone between the African and Eurasian plates, near the Quaternary subduction-related Aeolian arc and above the downgoing Ionian oceanic slab. Magmatic evolution broadly involves a transition from an early tholeiitic phase (~500 ka) to the current alkaline phase. Most geochemical investigations have focussed on Declarations Funding: JBT acknowledges financial support from the French Agence Nationale de la Recherche (grant ANR-10-BLAN-0603 M&Ms-Mantle Melting-Measurements, Models, Mechanisms) Conflicts of interest/Competing interests: not applicable Availability of data and material (data transparency): All new data are provided in tables presented in this paper Code availability (software application or custom code): Not applicable Authors' contributions: HD conceived and designed the study. Material preparation was performed