Serandite
Williams E R, Weller M T
American Mineralogist 99 (2014) 1755-1760
A variable-temperature neutron diffraction study of serandite: A Mn-silicate
framework with a very strong, two-proton site, hydrogen bond
Note: T = 298 K
Locality: Mont St. Hilaire, Quebec, Canada
_database_code_amcsd 0020404
7.70244 6.90030 6.74470 90.4159 94.0442 102.8006 P-1
atom     x     y     z   occ  Uiso
Mn1  .8456 .5884 .1399       .0099
Mn2  .8559 .0903 .1329  .942  .013
Ca2  .8559 .0903 .1329  .058  .013
Na1  .5640 .2587 .3578       .0096
Si1  .2129 .4124 .3509       .0077
Si2  .2037 .9403 .3468       .0077
Si3  .4575 .7393 .1466       .0077
O1   .6663 .7941 .1126       .0107
O2   .3200 .7058 .9408       .0107
O3   .1758 .4955 .5553       .0107
O4   .1582 .8404 .5633       .0107
O5   .0606 .3948 .1654       .0107
O6   .0539 .8905 .1769       .0107
O7   .4068 .5360 .2775       .0107
O8   .3990 .9114 .2815       .0107
O9   .2618 .1873 .3891       .0107
H16   .144  .633  .545   .67  .035
H17   .167  .704  .526   .33  .035