Elpidite
Grigor'eva A A, Zubkova N V, Pekov I V, Kolitsch U, Pushcharovsky D Y,
Vigasina M F, Giester G,Dordevic T, Tillmanns E, Chukanov N V
Crystallography Reports 56 (2011) 832-841
Crystal chemistry of elpidite from Kahn Bogdo (Mongolia)
and its K- and Rb-exchanged forms
Locality: Kahn Bogdo, Mongolia
Note: Rb-exchanged at 90 deg C
_database_code_amcsd 0018523
7.1280 14.644 14.642 90 90 90 Pbcm
atom        x      y      z  occ   Uiso
Na(1)   .4421  .2315    .75 .661  .0343
Na(2)  -.0029    .25     .5 .920  .0250
Rb      -.004  .1410  .5789  .10   .037
Zr     .49697    .25     .5      .00939
Si(1)  .77407 .38617 .64615       .0132
Si(2)  .50553 .04747 .64216       .0124
Si(3)  .21932 .39087 .64457       .0128
O(1)    .9961  .4040  .6383       .0242
O(2)    .7207  .3560    .75       .0226
O(3)    .7092  .3091  .5775       .0221
O(4)    .6782  .4846  .6250       .0232
O(5)    .5181  .0727    .75       .0219
O(6)    .4929  .1395  .5872       .0237
O(7)    .3086  .4892  .6148       .0221
O(8)    .2808  .3723    .75       .0225
O(9)    .2897  .3097  .5816       .0218
Wat(1)  .0088  .1145  .5805  .91  .0257
Wat(2)  .1251  .1869    .75  .67   .047
Wat(3)   .014   .176   .797  .10   .040