AM_Phenakite Formula: Si Be2 O4 Name: Phenakite Unit cell: 12.472 12.472 8.251 90.0 90.0 120.0 , V=1111.50 Space group: R11-3 (1)

Downs J W , Gibbs G V , American Mineralogist , 72 (1987) p.769-777, An exploratory examination of the electron density and electrostatic potential, of phenakite