Davyne
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: Sar-e Sang mine, Badakhshan, Afghanistan
_database_code_amcsd 0012420
12.773 12.773 5.334 90 90 120 P6_3
atom     x     y     z occ  Uiso
Na1  .1579 .3108  .268 .50  .025
Na2  .1163 .2292  .267 .37  .049
Ca     2/3   1/3 .2042      .011
K    .1163 .2292  .267 .13  .049
Si   .0811 .4114 .7446     .0098
Al   .3385 .4102 .7440     .0091
O1   .2128 .4253  .704      .019
O2   .1079 .5490  .735      .019
O3   .0234 .3449 .0073      .019
O4   .3275 .3358  .023      .016
Cl     1/3   2/3 .2079      .085
S        0     0  .265 .50  .011
O5    .069  .110   .14 .25  .057
O6    .031  .109   .38 .25  .045
O7       0     0   .51 .50  .069