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# ggm44331
Locality: Vishnevye Mountains
_database_code_amcsd 0018876
12.627 12.627 5.136 90 90 120 P6_3
atom      x      y     z  occ   Uiso
Si1  .32815 .41088   .75      .01027
Al2  .07515 .41252 .7510  .94 .01077
Si2  .07515 .41252 .7510  .06 .01077
O1   .20301 .40490 .6605       .0172
O2   .11441 .56360 .7266       .0219
O3   .02867 .34943 .0600       .0168
O4   .31430 .35775 .0427       .0177
Na      2/3    1/3 .1345       .0374
Wat    .686   .303 .6892 .333   .064
NaA   .1223  .2452 .2867  .44  .0241
CaA   .1223  .2452 .2867  .10  .0241
NaA'  .1269  .2601  .301  .39   .040
CaA'  .1269  .2601  .301  .07   .040
C1        0      0  .692  .19   .016
OC1   .0574  .1194  .692  .19   .010
C2        0      0  .935 .216   .012
OC2   .0603  .1155  .935 .216   .034
C3        0      0  .611  .21   .023
OC3   .0541  .1138  .611  .21   .034
C4        0      0  .810 .234   .018
OC4    .060   .123  .810 .234   .071