AM_Tridymite_1 Formula: Si O2 Name: Tridymite Unit cell: 15.021 8.6004 16.4338 90.0 91.512 90.0 , V=2122.29 Space group: C111 (1)

Graetsch H , Topalovic-Dierdorf I , European Journal of Mineralogy , 8 (1996) p.103-113, 29Si MAS NMR spectrum and superstructure of modulated tridymite L3-To(MX-1), Sample: superstructure