AM_Cristobalite_20 Formula: Si O2 Name: Cristobalite Unit cell: 4.9877 4.9877 6.9697 90.0 90.0 90.0 , V=173.39 Space group: P41212 (92)

Pluth J J , Smith J V , Faber J , Journal of Applied Physics , 57 (1985) p.1045-1049, Crystal structure of low cristobalite at 10, 293, and 473 K:, Variation of framework geometry with temperature, Sample: T = 473 K, Locality: synthetic