AM_Rb2MgSi5O12 Formula: Rb (Mg.5 Si2.5) O6 Name: Rb2MgSi5O12 Unit cell: 13.53 13.53 13.53 90.0 90.0 90.0 , V=2476.81 Space group: IA-3D (230)

Torres-Martinez L M , West A R , Zeitschrift fur Kristallographie , 175 (1986) p.1-7, New family of silicate phases with the pollucite structure