Marchettiite, (NH4)C5H3N4O3, a new organic mineral from Mount Cervandone, Devero Valley, Western–Central Alps, Italy. - Guastoni, Alessandro; Nestola, Fabrizio; Zorzi, Federico; Lanza, Arianna; Ernst, Michelle; Gentile, Paolo; Andò, Sergio; Lorenzetti, Alessandra (Mineralogical Magazine, 2022)