Nosean
Hassan I, Grundy H D
The Canadian Mineralogist 27 (1989) 165-172
The structure of nosean, ideally Na8(Al6Si6O24)SO4.H2O
Note: O2 z-coordinate has been corrected according to the ICSD
_database_code_amcsd 0005223
9.084 9.084 9.084 90 90 90 P-43n
atom    x    y    z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Al    .25    0   .5            .039   .039   .039      0      0      0
Si    .25   .5    0            .020   .020   .020  .0320  .0320  .0320
O1   .137 .146 .544  .5 .039
O2   .153 .160 .475  .5 .035
Na1  .303 .303 .303 .21 .021
Na2  .674 .674 .674 .34 .046
Na3  .733 .733 .733 .46 .029
Wat3 .470 .470 .470 .12 .024
S       0    0    0 .49 .161
O4   .405 .405 .405 .49 .131