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
_database_code_amcsd 0018522
7.1312 14.6853 14.6349 90 90 90 Pbcm
atom         x      y      z  occ   Uiso
Na(1)    .4449 .23175    .75       .0477
Na(2)  -.00275    .25     .5       .0151
Zr      .49658    .25     .5      .00804
Si(1)   .77343 .38628 .64604      .01028
Si(2)   .50598 .04735 .64184      .01005
Si(3)   .21944 .39130 .64439      .01016
O(1)    .99571 .40384 .63913       .0179
O(2)     .7195 .35610    .75       .0183
O(3)     .7095 .30908 .57729       .0178
O(4)     .6779 .48448 .62422       .0195
O(5)     .5210 .07108    .75       .0192
O(6)    .49255 .14009 .58783       .0177
O(7)     .3072 .48949 .61315       .0167
O(8)     .2826 .37415    .75       .0177
O(9)     .2893 .30986 .58199       .0174
Wat(1)   .0080 .11320 .58101       .0344
Wat(2)   .1213  .1883    .75       .0650