AM_Ferriannite-(Cs)
Formula: Cs.968 Fe3.824 Si3.124 O12 H2
Name: Ferriannite-(Cs)
Unit cell: 5.487 9.506 10.826 90.0 99.83 90.0 , V=556.39
Space group: C12/M1 (12)

Mellini M , Weiss Z , Rieder M , Drabek M , European Journal of Mineralogy , 8 (1996) p.1265-1271, Cs-ferriannite as a possible host for waste cesium: crystal, structure and synthesis