Coesite
Levien L, Prewitt C T
American Mineralogist 66 (1981) 324-333
High-pressure crystal structure and compressibility of coesite
P = 38.7 kbar
_database_code_amcsd 0000820
7.0213 12.260 7.1252 90 120.66 90 C2/c
atom     x     y     z  Biso
Si1  .1374 .1095 .0707  0.40
Si2  .5085 .1572 .5439  0.38
O1       0     0     0  0.90
O2      .5 .1095   .75  0.55
O3   .2558 .1279 .9302  0.62
O4   .3167 .1006 .3257  0.73
O5   .0246 .2135 .4724  0.79