AM_Cristobalite_1
Formula: Si O2
Name: Cristobalite
Unit cell: 4.9501 4.9501 6.876 90.0 90.0 90.0 , V=168.49
Space group: P41212 (92)

Downs R T , Palmer D C , American Mineralogist , 79 (1994) p.9-14, The pressure behavior of alpha cristobalite, P = 0.19 GPa