Ikranite
Ekimenkova I A, Rastsvetaeva R K, Chukanov N V, Khasanov S S
Doklady Chemistry 371 (2000) 65-69
Crystal structure of an oxonium-containing analogue of eudialyte
Locality: Karnasurt Mountains, Lovozero massif, Kola Peninsula, Russia
_database_code_amcsd 0012505
14.167 14.167 30.081 90 90 120 R3m
atom       x     y      z  occ Biso
Zr     .3332 .1666  .1669      1.86
Ca     .4052 .3345  .3337 .550 2.21
Mn     .4052 .3345  .3337 .233 2.21
Ce     .4052 .3345  .3337 .083 2.21
Na     .4052 .3345  .3337 .075 2.21
Sr     .4052 .3345  .3337 .059 2.21
Si1    .0832 .5416  .2573       2.1
Si2    .1406 .0703  .0804       2.0
Si3    .0550 .3249  .2366       1.5
Si4    .2056 .4112  .0788       2.7
Si5    .5266 .2633  .2538       1.7
Si6   -.0073 .6052  .0971       1.6
O1     .0218 .5109  .3017       3.9
O2     .4127 .3092  .1278       2.3
O3     .4021 .0342  .0451       4.1
O4     .0359 .2993  .2881       4.0
O5     .0939 .3738  .1073       2.7
O6     .3912 .4377  .2260       2.5
O7     .2584 .0284  .2053       3.1
O8     .4452 .2226  .2938       5.8
O9     .1765 .3530  .2202       2.5
O10    .1912 .0956  .1259       3.2
O11    .1808 .3616  .0284       3.6
O12    .6060 .3940  .2537       3.1
O13    .2208 .1104  .0389       4.0
O14    .3951 .6049  .2540       4.8
O15    .0185 .5092  .1046       4.0
O16    .0617 .1234  .0740       2.5
O17    .2725 .5450  .0709       5.0
O18    .4692 .2346  .2045       3.4
Fe     .1573 .3146  .3349  .70  4.6
ZrM1     1/3   2/3  .0306 .086  1.9
NbM1     1/3   2/3  .0306 .032  1.9
TiM1     1/3   2/3  .0306 .032  1.9
ZrM2     1/3   2/3  .2875 .163  2.8
NbM2     1/3   2/3  .2875 .068  2.8
TiM2     1/3   2/3  .2875 .068  2.8
Zr       1/3   2/3  .2271  .15  2.2
Si7      1/3   2/3  .0859  .30  1.7
Nal    .5324 .4676  -.003  .30  9.3
Na2a   .5681 .4319  .1730  .70  1.3
Na2b   .5450 .4550  .1789  .30  2.6
Na3    .1948 .0974  .2874  .65  2.5
K3     .1948 .0974  .2874  .10  2.5
Sr3    .1948 .0974  .2874  .05  2.5
Na     .1110 .2220  .1528 .495  2.2
H3O    .1110 .2220  .1528 .165  2.2
Na2    .4648 .2324  .0484 .615  1.4
H3O2   .4648 .2324  .0484 .205  1.4
H3O3   .0808 .1616  .1663  .34    3
H3O4    .492  .246   .035  .18  1.2
H3O5    .134  .067   .279  .20  1.9
OH1      1/3   2/3   .137  .30    7
OH2     .391  .609   .159  .22    4
OH3     .259  .518  .3307  .70  6.5
OH4     .420  .580 -.0009  .70  7.1
Cl       1/3   2/3   .150  .26  5.3
Watla     .0    .0  .2250   .7  1.5
Watlb     .0    .0   .199   .3  1.4
Wat2     2/3   1/3  .0999       2.5