Cancrinite
Pekov I V, Olysych L V, Chukanov N V, Zubkova N V,
Pushcharovsky D Yu, Van K V, Giester G, Tillmanns E
The Canadian Mineralogist 49 (2012) 1129-1150
Crystal chemistry of cancrinite-group minerals with an AB-type framework:
A review and new data. I. Chemical and structural variations
Note: Sample# kir2343
Locality: Khibiny
_database_code_amcsd 0018870
12.607 12.607 5.111 90 90 120 P6_3
atom       x       y      z  occ   Uiso
Si1  .328823 .411280    .75      .00725
Al2   .07563  .41234 .75076  .90 .00719
Si2   .07563  .41234 .75076  .10 .00719
O1    .20311  .40467 .65898      .01472
O2    .11579  .56374  .7243      .01825
O3    .03099  .35279 .06220      .01511
O4    .31617  .36021 .04601      .01547
Na       2/3     1/3  .1308       .0299
Wat    .6143   .3129  .6849 .333  .0570
NaA'   .1236   .2504  .2992  .57  .0230
CaA'   .1236   .2504  .2992  .05  .0230
NaA    .1195   .2410  .2677  .34  .0259
CaA    .1195   .2410  .2677  .02  .0259
C1        .0      .0  .6399 .289  .0215
OC1    .0579   .1182  .6399 .289  .0233
C2        .0      .0  .9089 .251  .0146
OC2    .0580   .1178  .9089 .251  .0225
C4        .0      .0  .7583 .196  .0111
OC4    .0580   .1188  .7583 .196  .0175