Topaz
Komatsu K, Kagi H, Marshall W G, Kuribayashi T, Parise J B, Kudoh Y
American Mineralogist 93 (2008) 217-227
Pressure dependence of the hydrogen-bond geometry in topaz-OD from neutron
powder diffraction
Locality: synthetic
Sample: 38 tons, P = 3.6 GPa
_database_code_amcsd 0004520
4.6978 8.8786 8.3390 90 90 90 Pbnm
atom     x     y     z occ  Uiso
Al    .904 .1341  .090     .0078
Si   .3978 .9412   .25     .0078
O1   .7107 .0279   .25     .0062
O2    .442 .7573   .25     .0062
O3   .2151 .9930 .0896     .0062
O4   .5945 .2540 .0676     .0062
D1    .464 .1846 .1215 .59  .053
D2    .526  .278 .1756 .41  .042