Albite
Harlow G E
American Mineralogist 67 (1982) 975-996
The anorthoclase structures: The effects of temperature and composition
Note: Or = 13.8, T = 750 C
Locality: Kakanui, New Zealand
_database_code_amcsd 0019657
8.321 12.969 7.148 90 116.05 90 C2/m
atom     x     y     z  occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na   .2839     0 .1496 .856 0.0126 0.0247 0.0619      0 0.0070      0
K    .2839     0 .1496 .141 0.0126 0.0247 0.0619      0 0.0070      0
Ca   .2839     0 .1496 .026 0.0126 0.0247 0.0619      0 0.0070      0
Al1  .0089 .1796 .2240  .25 0.0144 0.0054 0.0163 -.0011 0.0088 -.0002
Si1  .0089 .1796 .2240  .75 0.0144 0.0054 0.0163 -.0011 0.0088 -.0002
Al2  .6972 .1170 .3437  .25 0.0121 0.0045 0.0202 -.0003 0.0081 -.0001
Si2  .6972 .1170 .3437  .75 0.0121 0.0045 0.0202 -.0003 0.0081 -.0001
O1       0 .1378     0      0.0327 0.0083 0.0263      0 0.0151      0
O2   .6115     0 .2858      0.0145 0.0055 0.0508      0 0.0014      0
O3   .8282 .1382 .2288      0.0211 0.0123 0.0407 -.0031 0.0202 0.0018
O4   .0320 .3030 .2563      0.0251 0.0064 0.0397 -.0030 0.0150 -.0006
O5   .1850 .1251 .4121      0.0266 0.0084 0.0267 0.0023 0.0106 0.0019