Lazurite
Hassan I, Peterson R C, Grundy H D
Acta Crystallographica C41 (1985) 827-832
The structure of lazurite, ideally Na6Ca2(Al6Si6O24)S2, a member of the
sodalite group
Locality: Sary-Sang, Afghanistan
_database_code_amcsd 0010009
9.105 9.105 9.105 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)
Na1  .178 .178 .178 .35 .052
Na2  .231 .231 .231 .21 .041
Ca2  .231 .231 .231 .20 .041
Mg2  .231 .231 .231 .09 .041
Na3  .305 .305 .305 .22 .035
Al    .25    0   .5 .99 .034   .062   .019   .019      0      0      0
Si    .25    0   .5 .01 .034   .062   .019   .019      0      0      0
Si    .25   .5    0     .039   .013   .052   .052      0      0      0
O1   .133 .147 .545  .5 .039
O2   .157 .158 .474  .5 .039
O3   .598 .598 .598 .78 .212
S       0    0    0     .168