Albite
Harlow G E
American Mineralogist 67 (1982) 975-996
The anorthoclase structures: The effects of temperature and composition
Note: Or = 32.5, T = 400 C
Locality: Grande Calderira, Azores
_database_code_amcsd 0019653
8.3482 12.9800 7.1582 90 116.109 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   .2796     0 .1366 .686 0.0095 0.0107 0.0334      0 0.0087      0
K    .2796     0 .1366 .334 0.0095 0.0107 0.0334      0 0.0087      0
Ca   .2796     0 .1366 .008 0.0095 0.0107 0.0334      0 0.0087      0
Al1  .0091 .1797 .2238  .25 0.0135 0.0031 0.0106 -.0008 0.0076 -.0002
Si1  .0091 .1797 .2238 .750 0.0135 0.0031 0.0106 -.0008 0.0076 -.0002
Al2  .6985 .1167 .3431  .25 0.0132 0.0025 0.0124 -.0002 0.0075 -.0001
Si2  .6985 .1167 .3431 .750 0.0132 0.0025 0.0124 -.0002 0.0075 -.0001
O1       0 .1408     0      0.0240 0.0049 0.0098      0 0.0096      0
O2   .6157     0 .2884      0.0190 0.0032 0.0194      0 0.0089      0
O3   .8242 .1373 .2236      0.0182 0.0064 0.0290 -.0006 0.0159 0.0011
O4   .0275 .3078 .2544      0.0187 0.0037 0.0280 -.0012 0.0136 -.0014
O5   .1883 .1248 .4087      0.0190 0.0045 0.0209 0.0015 0.0082 0.0016