AM_Phenakite_2 Formula: Be2 Si O4 Name: Phenakite Unit cell: 12.437 12.437 8.228 90.0 90.0 120.0 , V=1102.19 Space group: R11-3 (1)

Hazen R M , Au A Y , Physics and Chemistry of Minerals , 13 (1986) p.69-78, High-pressure crystal chemistry of phenakite (Be2SiO4), and bertrandite (Be4Si2O7(OH)2), Sample: P = 16 kbar