Mendeleevite-(Ce)
Sokolova E, Hawthorne F C, Pautov L A, Agakhanov A A, Karpenko V Y
Mineralogical Magazine 75 (2011) 2583-2596
The crystal structure and crystal chemistry of mendeleevite-(Ce),
(Cs,_)6(_,Cs)6(_,K)6(REE,Ca,_)30(Si70O175)(H2O,OH,F,_)35,
a potential microporous material
Locality: moraine of the Darai-Pioz glacier, Alai mountain ridge,
Tien-Shan mountains, northern Tajikistan
_database_code_amcsd 0018578
21.9148 21.9148 21.9148 90 90 90 Pm3
atom         x      y      z occ   Uiso
CeM(1)  .28869 .29333 .16693 .50 .01081
LaM(1)  .28869 .29333 .16693 .26 .01081
NdM(1)  .28869 .29333 .16693 .14 .01081
PrM(1)  .28869 .29333 .16693 .07 .01081
SmM(1)  .28869 .29333 .16693 .02 .01081
GdM(1)  .28869 .29333 .16693 .01 .01081
CeM(2A) .40430 .40992 .11371 .39  .0182
LaM(2A) .40430 .40992 .11371 .20  .0182
NdM(2A) .40430 .40992 .11371 .11  .0182
PrM(2A) .40430 .40992 .11371 .05  .0182
SmM(2A) .40430 .40992 .11371 .01  .0182
GdM(2A) .40430 .40992 .11371 .01  .0182
CaM(2A) .40430 .40992 .11371 .02  .0182
CeM(2B)  .3844  .4123  .1193 .05  .0182
LaM(2B)  .3844  .4123  .1193 .02  .0182
NdM(2B)  .3844  .4123  .1193 .01  .0182
PrM(2B)  .3844  .4123  .1193 .01  .0182
CaM(3)  .30685 .31416      0 .74  .0207
SrM(3)  .30685 .31416      0 .17  .0207
CeM(3)  .30685 .31416      0 .02  .0207
LaM(3)  .30685 .31416      0 .01  .0207
NdM(3)  .30685 .31416      0 .01  .0207
CsA(1)  .23200     .5 .24858 .78  .0448
CsA(2)      .5  .4200  .3981 .22  .0459
KB(1)    .0892  .3728      0 .35   .044
KB(2)     .078   .404      0 .02   .044
Si(1)   .42893     .5 .24647      .0132
Si(2)   .23758 .43094 .07310      .0112
Si(3)   .06963 .26204 .16567      .0111
Si(4)   .42934 .25606 .07078      .0124
Si(5)   .14260 .37357 .15483      .0116
Si(6)   .36548 .38330 .27932      .0219
Si(7)   .16716 .16716 .16716      .0098
O(1)     .1704  .4079  .0957      .0161
O(2)     .4035     .5  .1785       .020
O(3)     .1940  .3439  .1973      .0152
O(4)         0  .2518  .1432       .015
O(5)     .3861  .3043  .1037      .0178
O(6)     .4257  .1900  .1037      .0195
O(7)     .0961  .3221  .1288      .0193
O(8)     .2891  .3841  .0941      .0203
O(9)     .2706  .2376  .0762      .0192
O(10)       .5  .2773  .0719       .017
O(11)    .3490  .3730  .2098      .0330
O(12)    .2342  .4333      0       .022
O(13)    .2477     .5  .0992       .014
O(14)    .3992  .3238  .3079      .0304
O(15)    .4111  .4411  .2855       .050
O(16)    .4077  .2479      0       .022
O(17)    .1413  .1073  .2031      .0166
O(18)    .2095  .2095  .2095       .014
O(19)       .5  .5177  .2475  .5   .029
F        .2778  .2778  .2778      .0142
WatO(20) .3779     .5  .0512  .5   .025
OHO(20)  .3779     .5  .0512  .5   .025
WatO(21)    .5  .4304  .0567  .5   .060
OHO(21)     .5  .4304  .0567  .5   .060
WatO(22)    .5      0      0 2/3   .048
WatO(23)    .5  .3849  .1678 .42   .054
OHO(23)     .5  .3849  .1678 .35   .054
FO(23)      .5  .3849  .1678 .23   .054
WatO(24) .1829  .3036      0 .77   .045
WatO(25)     0  .3870  .4029 .42   .057
OHO(25)      0  .3870  .4029 .35   .057
FO(25)       0  .3870  .4029 .23   .057
WatO(26)    .5     .5     .5  .5    .03
WatO(27)     0   .305      0 1/3   .063