Leucite
Peacor D R
Zeitschrift fur Kristallographie 127 (1968) 213-224
A high temperature single crystal diffractometer study of leucite, (K,Na)AlSi2O6
Sample: T = 635 C
Locality: Vesuvius, Italy
Note: cell parameters were not reported in the paper. A value was chosen
that reproduced the reported bond lengths and thermal ellipsoid axes.
_database_code_amcsd 0010665
13.53 13.53 13.53 90 90 90 Ia-3d
atom     x     y     z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
K     .125  .125  .125 .85   .021   .021   .021  .0022  .0022  .0022
Na    .125  .125  .125 .15   .021   .021   .021  .0022  .0022  .0022
Al    .125 .6622 .5878 1/3  .0035  .0039  .0039  .0005  .0005  .0000
Si    .125 .6622 .5878 2/3  .0035  .0039  .0039  .0005  .0005  .0000
O    .1033 .1322 .7200      .0137  .0113  .0051  .0041  .0032  .0005