Kalsilite
Cellai D, Gesing T M, Wruck B, Carpenter M A
American Mineralogist 84 (1999) 1950-1955
X-ray study of the trigonal-hexagonal phase transition in metamorphic kalsilite
_database_code_amcsd 0002336
5.1627 5.1627 8.706 90 90 120 P6_3
atom     x     y    z U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
K        0     0  .25  .0174  .0174  .0194  .0087      0      0
Al     1/3   2/3 .061  .0086  .0086   .011  .0043      0      0
Si     1/3   2/3 .443  .0081  .0081   .007 .00405      0      0
O1     1/3   2/3 .241   .052   .052   .005   .026      0      0
O2   .6027 .0119 .997   .011   .012   .036   .006   .003   .002