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 = 150 K
Locality: Mont St. Hilaire, Quebec, Canada
_database_code_amcsd 0020403
7.6888 6.8934 6.73781 90.4467 94.0672 102.7771 P-1
atom     x     y     z   occ  Uiso
Mn1  .8522 .5900 .1389       .0030
Mn2  .8512 .0895 .1324  .947  .004
Ca2  .8512 .0895 .1324  .053  .004
Na1  .5603 .2548 .3573       .0115
Si1  .2170 .4114 .3474       .0033
Si2  .2060 .9472 .3474       .0033
Si3  .4591 .7392 .1464       .0033
O1   .6664 .7960 .1090       .0051
O2   .3216 .7070 .9391       .0051
O3   .1785 .4970 .5555       .0051
O4   .1602 .8434 .5580       .0051
O5   .0642 .3936 .1674       .0051
O6   .0524 .8935 .1734       .0051
O7   .4089 .5349 .2766       .0051
O8   .3983 .9109 .2862       .0051
O9   .2581 .1883 .3951       .0051
H16  .1461  .630  .552   .69 .0237
H17   .161  .705  .533   .31 .0237