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 (2an) _database_code_amcsd 0005958 13.400 5.7232 11.0573 90 100.537 90 C2/m atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) CeA1 .35648 0 .73698 .0146 .0162 .0150 .0129 0 .0031 0 CeA2 .07064 0 .74336 .0177 .0128 .0263 .0129 0 -.0005 0 Fe2+M1 .5 0 .5 .85 .0119 .0141 .0151 .0049 0 -.0022 0 CaM1 .5 0 .5 .05 .0119 .0141 .0151 .0049 0 -.0022 0 MnM1 .5 0 .5 .04 .0119 .0141 .0151 .0049 0 -.0022 0 YM1 .5 0 .5 .03 .0119 .0141 .0151 .0049 0 -.0022 0 ZrM1 .5 0 .5 .03 .0119 .0141 .0151 .0049 0 -.0022 0 Fe3+M2 .25 .25 0 .595 .0100 .0129 .0110 .0055 -.0003 .0004 .0001 TiM2 .25 .25 0 .285 .0100 .0129 .0110 .0055 -.0003 .0004 .0001 NbM2 .25 .25 0 .08 .0100 .0129 .0110 .0055 -.0003 .0004 .0001 TiM3 0 0 0 .0163 .014 .02479 .010 0 .0023 0 TiM4 .5 0 0 .0156 .012 .022 .011 0 -.0012 0 Si1 .2020 .5 .7312 .0265 .030 .0248 .0240 0 .0031 0 Si2 .3596 .5 .5442 .0302 .032 .032 .0252 0 .0027 0 O1 .4781 .2522 .8732 .0109 .007 .017 .009 -.003 .000 -.003 O2 .1467 0 .9786 .009 .009 .008 .009 0 .000 0 O3 .1872 0 .5963 .012 .021 .013 .000 0 .001 0 O4 .3478 0 .9886 .0048 .003 .007 .004 0 -.002 0 O5 .4279 .269 .5905 .021 .019 .030 .012 .008 .000 .010 O6 .2277 -.7360 .8142 .0098 .021 .006 .003 .001 .002 .001 O7 .0851 .5 .6660 .028 .006 .048 .024 0 -.010 0 O8 .2734 .5 .6308 .034 .027 .054 .028 0 .025 0