AM_Phenakite_4
Formula: Be2 Si O4
Name: Phenakite
Unit cell: 12.37 12.37 8.188 90.0 90.0 120.0 , V=1085.05
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 = 49.5 kbar