AM_Phase-E Formula: Mg.338 Si.193 O H.533 Name: Phase-E Unit cell: 2.9701 2.9701 13.882 90.0 90.0 120.0 , V=106.05 Space group: R-3M (166)

Kudoh Y , Finger L W , Hazen R M , Prewitt C T , Kanzaki M , Veblen D R , Physics and Chemistry of Minerals , 19 (1993) p.357-360, Phase E: A high pressure hydrous silicate with unique, crystal chemistry, Sample: 1