AM_Quartz_32 Formula: Si O2 Name: Quartz Unit cell: 4.6764 4.6764 5.2475 90.0 90.0 120.0 , V=99.38 Space group: P3121 (152)

Glinnemann J , King H E , Schulz H , Hahn T , La Placa S J , Dacol F , Zeitschrift fur Kristallographie , 198 (1992) p.177-212, Crystal structures of the low-temperature quartz-type phases of SiO2 and GeO2 at elevated pressure, P = 7.2GPa = 72 kbar