Tridymite
Kihara K, Matsumoto T, Imamura M
Zeitschrift fur Kristallographie 177 (1986) 27-38
Structural change of orthorhombic-I tridymite with temperature:
A study based on second-order thermal-vibrational parameters
Note: Dollase's model, T = 573 K
Locality: synthetic refractory silica brick
_database_code_amcsd 0020933
8.764 5.039 8.235 90 90 90 *C222_1
0 0 .25
atom     x     y     z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Si   .1682 .5352 .4380  .0111  .0301  .0109  .0013  .0003 -.0012
O1   .3273     0   .75  .0297  .0964  .0117                .0079
O2       0 .5572    .5  .0116  .1496  .0356        -.0004
O3   .2533 .3030 .5216  .0364  .0591  .0312  .0208 -.0041  .0102