(Na.75K.25)AlGeO4
Hammond R P, Barbier J
Acta Crystallographica B54 (1998) 211-220
Monoclinic and hexagonal nepheline structures of (Na3/4K1/4)AlGeO4
Locality: synthetic
Note: hexagonal nepheline
_database_code_amcsd 0009903
10.1640 10.1640 8.540 90 90 120 P6_3
atom      x      y      z occ   Uiso
Na1       0      0  .9975 .12  .0436
KK1       0      0  .9975 .76  .0436
Na2   .9945  .4380  .9964      .0300
Al1     1/3    2/3  .1866 .97  .0115
Gel     1/3    2/3  .1866 .03  .0115
Al2   .0897  .3325  .6810 .97  .0130
Ge2   .0897  .3325  .6810 .03  .0130
Ge3     1/3    2/3  .8000      .0176
Ge4  .08990  .3336 .30804     .01645
O1    .2664  .6124  .9948 1/3   .027
O2    .0158  .3147  .4953      .0434
O3    .1643  .5186  .7401       .056
O4    .1639  .5181  .2510       .052
O5    .2232  .2751  .3141      .0253
O6    .2254  .2762  .6756      .0239