Citation: Biagioni, C.; Bonaccorsi, E.; Pasero, M.; Moelo, Y.; Ciriotti, M. E.; Bersani, D.; Callegari, A. M.; Boiocchi, M. (2011). Ambrinoite, (K,NH4)2(As,Sb)8S13*H2O, a new mineral from Upper Susa Valley, Piedmont, Italy: The first natural (K,NH4)-hydrated sulfosalt. American Mineralogist, 96, pp. 878-887.