Chevkinite-(Ce)
Sokolova E V, Hawthorne F C, Della Ventura G, Kartashov P M
The Canadian Mineralogist 42 (2004) 1013-1025
Chevkinite-(Ce): Crystal structure and the effect of moderate radiation-induced
damage on site-occupancy refinement
Locality: Mongolia
Reported formula: (Ce1.85 La1.11 Nd.53 Pr.15 Sm.04 Gd.03 Ca.32 Th.02)
(Fe2+.85 Mn2+.04 Zr.03 Y.03 Ca.05) (Ti2.54 Fe3+1.19 Nb.15) Si4.06 O22
Crystal (2)
_database_code_amcsd 0005957
13.534 5.789 11.159 90 100.57 90 C2/m
atom        x      y      z  Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
CeA1   .35496      0 .73642 .0283  .0304  .0248  .0308      0  .0086      0
CeA2   .06918      0 .74232 .0316  .0242  .0462  .0254      0  .0073      0
Fe2+M1     .5      0     .5 .0347   .053  .0286  .0234      0  .0095      0
Fe3+M2    .25    .25      0 .0231  .0284  .0204  .0206  .0003  .0045  .0005
TiM3        0      0      0 .0209   .024   .019  .0222      0  .0085      0
TiM4       .5      0      0 .0266  .0301  .0215  .0277      0  .0041      0
Si1     .2020     .5  .7317 .0370   .041  .0303   .040      0  .0088      0
Si2     .3576     .5  .5470 .0416   .046   .041   .038      0  .0093      0
O1      .4776  .2532  .8744 .0223   .023   .026   .020  -.005  .0078  -.006
O2      .1468      0  .9786  .020   .021   .017   .023      0   .006      0
O3      .1827      0  .5957  .025   .036   .019   .019      0   .008      0
O4      .3486      0  .9886  .021   .024   .019   .019      0   .005      0
O5      .4247   .273  .5985  .037   .040   .037   .031   .003  -.005  .0172
O6      .2286 -.7354  .8138 .0193   .036   .010   .012   .000   .004   .003
O7      .0831     .5  .6737  .052   .016   .083   .053      0  -.004      0
O8      .2654     .5  .6254  .053   .044   .083   .039      0   .030      0