AM_Cristobalite_17 Formula: Si O2 Name: Cristobalite Unit cell: 8.3769 4.602 9.0583 90.0 124.939 90.0 , V=286.26 Space group: P121/C1 (14)

Dove M T , Craig M S , Keen D A , Marshall W G , Redfern S A T , Trachenko K O , Tucker M G , Mineralogical Magazine , 64 (2000) p.569-576, Crystal structure of the high-pressure monoclinic phase-II of cristobalite, SiO2, Locality: synthetic, Note: refinement by constrained Rietveld analysis