AM_Superhydrous Phase B_1 Formula: (Mg8.2 Ni1.8) Si3 O18 (D3.2 H.8) Name: Superhydrous Phase B Unit cell: 13.991 5.097 8.715 90.0 90.0 90.0 , V=621.49 Space group: PNNM (58)

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: JIM252