AM_Quartz_4 Formula: Si O2 Name: Quartz Unit cell: 4.722 4.722 5.267 90.0 90.0 120.0 , V=101.71 Space group: P3221 (154)

Levien L , Prewitt C T , Weidner D J , American Mineralogist , 65 (1980) p.920-930, Structure and elastic properties of quartz at pressure, P = 55.8 kbar