Nepheline
Antao S M, Hassan I
The Canadian Mineralogist 48 (2010) 69-80
Nepheline: structure of three samples from the Bancroft area, Ontario,
obtained using synchrotron high-resolution powder x-ray diffraction
Locality: Egan Chute, Bancroft area, Ontario, Canada
Sample: 1b
_database_code_amcsd 0006318
9.99567 9.99567 8.37777 90 90 120 P6_3
atom      x      y     z  occ   Uiso
K         0      0 .0006 .716  .0263
Na   .44318 .99665 .9893  .96  .0227
Ca   .44318 .99665 .9893  .04  .0227
Al1     2/3    1/3 .8057       .0114
Al2   .3307  .0916 .3111      .01031
Si1     2/3    1/3 .1901       .0114
Si2   .3374  .0970 .6852      .01031
O1    .7154  .3371 .0054  1/3   .027
O2    .3199  .0310 .5008       .0318
O3    .5154  .1655 .7182       .0346
O4    .5188  .1751 .2362       .0274
O5    .2852  .2308 .3046       .0310
O6    .2680  .2182 .6862       .0153