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 = 0.0 GPa
_database_code_amcsd 0011007
4.921 4.921 5.4163 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   .4698     0      0  .0049  .0041  .0046 .00205  .0001  .0002
O    .4151 .2675 -.1194   .014  .0102  .0101  .0091  .0029  .0036