Offretite
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 #2 from Fitta
_database_code_amcsd 0002007
13.308 13.308 7.597 90 90 120 P-6m2
atom      x     y     z occ Uiso
Si1   .0006 .2317 .2048 .70 .039
Al1   .0006 .2317 .2048 .30 .039
Si2   .0921 .4227    .5 .70 .026
Al2   .0921 .4227    .5 .30 .026
Ca1     2/3   1/3 .3876 .43 .041
Ca2     2/3   1/3 .2438 .32 .033
K         0     0    .5 .89 .018
Mg      1/3   2/3     0 .86 .030
O1    .0208 .3479 .3173     .020
O2    .0957 .9043 .2686     .091
O3    .8761 .1239 .2900     .089
O4    .0019 .2691     0     .049
O5    .2287 .7713    .5     .067
O6     .457  .543    .5     .019
Wat1    1/3   2/3 .2335     .120
Wat2  .2424 .7576     0 .65 .020
Wat3  .1129 .4602     0 .55 .039
Wat4  .7564 .2436    .5 .94 .044
Wat5 -.4363 .4363 .1603      .13