AM_Quartz_25 Formula: Si O2 Name: Quartz Unit cell: 4.9964 4.9964 5.4543 90.0 90.0 120.0 , V=117.92 Space group: P6222 (180)

Kihara K , European Journal of Mineralogy , 2 (1990) p.63-77, An X-ray study of the temperature dependence of the quartz structure, Sample: at T = 1012 K