Coesite
Levien L, Prewitt C T
American Mineralogist 66 (1981) 324-333
High-pressure crystal structure and compressibility of coesite
P = 46.0 kbar
_database_code_amcsd 0000821
7.0042 12.246 7.1177 90 120.7 90 C2/c
atom     x     y     z  Biso
Si1  .1370 .1098 .0704  0.38
Si2  .5085 .1576 .5441  0.35
O1       0     0     0  1.03
O2      .5 .1091   .75  0.64
O3   .2543 .1291 .9284  0.57
O4   .3179 .1006 .3251  0.74
O5   .0264 .2129 .4719  0.80