AM_SiO2_22 Formula: Si O2 Name: SiO2 Unit cell: 4.1605 4.1294 7.4211 90.0 101.3752 90.0 , V=124.99 Space group: P121 (3)

Boisen M B , Gibbs G V , Bukowinski M S T , Physics and Chemistry of Minerals , 21 (1994) p.269-284, Framework silica structures generated using simulated annealing, with a potential energy function based on an H6Si2O7 molecule, Sample: 23