AM_Wadsleyite_38 Formula: Mg1.72 Si O4 Name: Wadsleyite Unit cell: 5.675 11.579 8.244 90.0 90.09 90.0 , V=541.72 Space group: I12/M1 (12)

Kudoh Y , Inoue T , Physics and Chemistry of Minerals , 26 (1999) p.382-388, Mg-vacant structural modules and dilution of the symmetry, of hydrous wadsleyite, beta-Mg2-xSiH2xO4 with 0.00<=x<=0.25, Sample: 0.5H-beta