AM_Quartz_22 Formula: Si O2 Name: Quartz Unit cell: 4.9972 4.9972 5.4569 90.0 90.0 120.0 , V=118.01 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 = 891 K