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 Agate Beach
_database_code_amcsd 0002004
13.289 13.289 15.079 90 90 120 P6_3/mmc
atom       x     y     z  occ Uiso
Si1   -.0005 .2332 .1015 .830 .031
Al1   -.0005 .2332 .1015 .170 .031
Si2    .0897 .4249   .25 .655 .046
Al2    .0897 .4249   .25 .345 .046
Ca1      1/3   2/3 .1137  .30 .085
Ca2      1/3   2/3 .9047  .22 .079
Ca3      2/3   1/3  .177  .16 .020
Mg       2/3   1/3  .049  .20 .018
K          0     0   .25  .87 .017
O1     .0175 .3305 .6752      .057
O2     .0915 .1830 .1176      .064
O3     .1101 .2202 .6371      .062
O4     .2693     0     0      .019
O5     .2329 .4658   .25      .088
O6     .0365 .5182   .25      .052
Wat1    .245  .490  .106  .33 .162
Wat2b  .2658 .5316 .7009  .86 .135
Wat3    .422  .844  .897  .90 .107
Wat3b   .469 -.602  .073  .30 .107
Wat3c   .441  .882  .789  .24 .107