AM_Superhydrous Phase B Formula: Mg10 Si3 O18 H4 Name: Superhydrous Phase B Unit cell: 14.024 5.109 8.733 90.0 90.0 90.0 , V=625.71 Space group: PNN2 (34)

Koch-Muller M , Dera P , Fei Y , Hellwig H , Liu Z , Van Orman J , Wirth R , Physics and Chemistry of Minerals , 32 (2005) p.349-361, Polymorphic phase transition in Superhydrous Phase B, Sample: MKM0105, Note: z(O6) corrected by authors