Erionite-Ca
Gualtieri A, Artioli G, Passaglia E, Bigi S, Viani A, Hanson J C
American Mineralogist 83 (1998) 590-606
Crystal structure-crystal chemistry relationships in the zeolites erionite
and offretite
Sample from Lady Hill
_database_code_amcsd 0002001
13.339 13.339 15.112 90 90 120 P6_3/mmc
atom      x     y     z  occ Uiso
Si1   .0012 .2308 .1058 .939 .027
Al1   .0012 .2308 .1058 .061 .027
Si2   .0871 .4190   .25 .512 .015
Al2   .0871 .4190   .25 .488 .015
Ca1     1/3   2/3  .118  .40 .091
Ca2     1/3   2/3  .942  .47 .082
Ca3     2/3   1/3  .221  .07 .041
Ca4      .5     0     0  .04 .091
K         0     0   .25      .051
O1    .0295 .3443 .1584      .044
O2    .0991 .1982 .1285      .052
O3    .1266 .2532 .6284      .044
O4    .2645     0     0      .051
O5    .2314 .4628   .25      .033
O6    .1105 .5552   .25      .035
Wat1  .2705 .5410 -.060  .39 .067
Wat1b .2439 .4878 .0154  .46 .067
Wat2  .2050 .4100   .75  .31 .048
Wat2b  .254  .508  .691  .29 .048
Wat3  .4414 .8828 .9141  .62 .047
Wat3b  .470 -.060  .027  .38 .047
Wat3c .4205 .8410 .6586  .18 .047