AM_Sursassite_9 Formula: Mn2 Al3 Si3 O14 H3 Name: Sursassite Unit cell: 8.715 5.7981 9.798 90.0 108.879 90.0 , V=468.46 Space group: P121/M1 (11)

Nagashima M , Akasaka M , Minakawa T , Libowitzky E , Armbruster T , American Mineralogist , 94 (2009) p.1440-1449, Sursassite: hydrogen bonding, cation order, and pumpellyite intergrowth, Locality: Gambatesa, Italy, Sample Number: 7