Citation: Demartin, F.; Campostrini, I.; Castellano, C.; Gramaccioli, C. M.; Russo, M. (2012). D'ansite-(Mn), Na21Mn2+(SO4)10Cl3 and d'ansite-(Fe), Na21Fe2+(SO4)10Cl3, two new minerals from volcanic fumaroles. Mineralogical Magazine, 76, pp. 2773-2783.