Cancrinite
Rozenberg K A, Rastsvetaeva R K, Chukanov N V
Crystallography Reports 54 (2009) 793-799
Crystal structures of oxalate-bearing cancrinite with an unusual
arrangement of CO3 groups and sulfate-rich davyne
Locality: Kovdor massif, Kola Peninsula, Russia
Note: Bruker SMART CCD diffractometer
_database_code_amcsd 0012419
12.688 12.688 5.189 90 90 120 P6_3
atom     x     y     z occ Biso
Si   .3301 .4131 .7506      1.1
Al   .0762 .4142 .7512      1.1
O1   .2034 .4045 .6747      2.0
O2   .1191 .5653 .7293      2.8
O3   .0260 .3538 .0541      2.1
O4   .3226 .3608 .0375      2.1
Na1    2/3   1/3 .1254 .73  2.5
Ca     2/3   1/3 .1254 .04  2.5
Na2  .1326 .2674 .2883 .52  2.4
Na3  .1102 .2202  .287 .21  4.7
K    .1102 .2202  .287 .05  4.7
Na4  .1539 .3134  .281 .22  2.6
C1       0     0  .297 .20  3.2
O5    .116  .060  .303 .20  5.5
C2       0     0  .512 .30  2.4
O6    .102  .090  .524 .30  5.2
Wat   .306  .620  .190 .25  4.0