AM_Tridymite_5 Formula: Si5 O10 Name: Tridymite Unit cell: 9.932 17.216 81.864 90.0 90.0 90.0 , V=13997.87 Space group: F111 (1)

Konnert J H , Appleman D E , Acta Crystallographica, Section B , 34 (1978) p.391-403, The crystal structure of low tridymite, Locality: Plumas County, California, USA