Quartz
Glinnemann J, King H E, Schulz H, Hahn T, La Placa S J, Dacol F
Zeitschrift fur Kristallographie 198 (1992) 177-212
Crystal structures of the low-temperature quartz-type phases of SiO2 and GeO2 at elevated pressure
P = 4.0 GPa
_database_code_amcsd 0011008
4.775 4.775 5.3046 90 90 120 *P3_121
0 0 .3333333333333333
atom     x     y      z U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Si   .4570     0      0  .0012  .0020  .0069  .0010  .0001  .0002
O    .4080 .2881 -.1033   .017  .0090   .011   .010   .003   .001