Carmine Apollaro (*), Domenico Miriello (*), Andrea Bloise (*), Teresa Critelli (*), Elisavet Dotsika (**), Stefano Marabini (*) & Gino Mirocle Crisci (*)
(*) Department of Earth Sciences, University of Calabria, Via Ponte Pietro Bucci, 87036 Arcavacata di Rende (CS), Italy.
(**) Institute of Materials Science, NCSR Demokritos, Athens, Greece.