Semenovite-(Ce)
Mazzi F, Ungaretti L, Dal Negro A, Petersen O V, Ronsbo J G
American Mineralogist 64 (1979) 202-210
The crystal structure of semenovite
_database_code_amcsd 0000705
13.879 13.835 9.942 90 90 90 Pmnn
atom     x      y     z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Ce1  .1390      0     0 .80  .0012  .0015  .0028      0      0 -.0003
Na1  .1390      0     0 .14  .0012  .0015  .0028      0      0 -.0003
Na2  .1349      0    .5 .56  .0053  .0067  .0087      0      0  .0013
Ce2  .1349      0    .5 .20  .0053  .0067  .0087      0      0  .0013
Fe3     .5      0    .5 .40  .0024  .0018  .0038      0      0  .0001
Mn3     .5      0    .5 .40  .0024  .0018  .0038      0      0  .0001
Fe4     .5      0     0 .10  .0039  .0013  .0026      0      0  .0012
Mn4     .5      0     0 .10  .0039  .0013  .0026      0      0  .0012
Ca5  .1385  .2097 .0128 .52  .0015  .0022  .0023  .0008  .0002  .0001
Na5  .1385  .2097 .0128 .48  .0015  .0022  .0023  .0008  .0002  .0001
Na6  .1431  .3060 .5053 .87  .0017  .0038  .0040  .0010  .0004 -.0013
Ca6  .1431  .3060 .5053 .13  .0017  .0038  .0040  .0010  .0004 -.0013
Si1  .3373 -.0044 .2532      .0013  .0018  .0040  .0004 -.0003  .0000
Si2  .2045  .1509 .2789 .80  .0007  .0011  .0021  .0000 -.0002 -.0001
Be2  .2045  .1509 .2789 .20  .0007  .0011  .0021  .0000 -.0002 -.0001
Be3  .2043  .1547 .7769 .80  .0015  .0033  .0044  .0001  .0006  .0006
Si3  .2043  .1547 .7769 .20  .0015  .0033  .0044  .0001  .0006  .0006
Si4     .5  .1297 .2364 .80  .0014  .0010  .0020      0      0 -.0009
Be4     .5  .1297 .2364 .20  .0014  .0010  .0020      0      0 -.0009
Be5     .5  .1388 .7289 .80  .0015  .0030  .0064      0      0  .0041
Si5     .5  .1388 .7289 .20  .0015  .0030  .0064      0      0  .0041
Si6      0  .1493 .2350      .0010  .0020  .0042      0      0  .0004
Si7      0  .1513 .7466      .0020  .0024  .0048      0      0  .0004
O1   .2490  .2473 .3393      .0027  .0016  .0030 -.0003 -.0009 -.0008
O2   .2668  .0627 .3473      .0019  .0021  .0043  .0007  .0000 -.0002
O3   .2703  .0649 .8477      .0017  .0012  .0046  .0006  .0003  .0001
O4   .4061  .0737 .1713      .0014  .0023  .0040 -.0001 -.0005  .0003
O5   .4065  .0742 .6567      .0014  .0016  .0051 -.0001  .0004  .0003
O6   .0940  .1379 .3375      .0009  .0040  .0030  .0001 -.0005  .0001
O7   .0963  .1395 .8393      .0009  .0038  .0048  .0003 -.0002  .0015
O8   .2023  .1449 .1172      .0019  .0019  .0021 -.0001  .0002  .0002
F9   .2066  .1547 .6208      .0020  .0021  .0028 -.0002  .0000 -.0001
O10     .5  .2397 .1699      .0017  .0018  .0047      0      0 -.0011
O11     .5  .2450 .6648      .0027  .0020  .0034      0      0 -.0001
O12     .5  .1328 .3934      .0024  .0031  .0018      0      0  .0003
OH13    .5  .1361 .8857      .0025  .0030  .0039      0      0 -.0003
O14      0  .0619 .1234      .0014  .0024  .0044      0      0 -.0009
OH15     0  .0756 .6209      .0026  .0021  .0085      0      0 -.0018