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: (Ce1.88 La1.01 Nd.61 Pr.19 Sm.06 Gd.03 Ca.27 Y.03 Th.02) (Fe2+.93 Mn.06 Zr.01) (Ti2.55 Fe3+1.29 Nb.16) Si3.91 O22 Crystal (3an) _database_code_amcsd 0005959 13.368 5.7243 11.041 90 100.516 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 .35694 0 .73625 .0183 .0216 .0207 .0125 0 .0029 0 CeA2 .07052 0 .74265 .0211 .0178 .0334 .0114 0 .0012 0 Fe2+M1 .5 0 .5 .93 .0173 .0208 .0226 .0079 0 .0013 0 Mn2+M1 .5 0 .5 .06 .0173 .0208 .0226 .0079 0 .0013 0 ZrM1 .5 0 .5 .01 .0173 .0208 .0226 .0079 0 .0013 0 Fe3+M2 .25 .25 0 .645 .0127 .0176 .0144 .0057 .0006 .0007 .0001 TiM2 .25 .25 0 .275 .0127 .0176 .0144 .0057 .0006 .0007 .0001 NbM2 .25 .25 0 .08 .0127 .0176 .0144 .0057 .0006 .0007 .0001 TiM3 0 0 0 .0152 .0143 .026 .0050 0 .0011 0 TiM4 .5 0 0 .0194 .0186 .029 .0094 0 -.0003 0 Si1 .2014 .5 .7310 .0296 .0333 .0318 .0233 0 .0038 0 Si2 .3588 .5 .5447 .0332 .0368 .0385 .0227 0 .0013 0 O1 .4780 .2517 .8734 .0148 .0141 .020 .010 -.002 .004 -.001 O2 .1461 0 .9780 .0115 .012 .013 .008 0 .002 0 O3 .1872 0 .5969 .0168 .023 .020 .008 0 .003 0 O4 .3479 0 .9886 .0126 .017 .010 .011 0 .008 0 O5 .4264 .2708 .5915 .0272 .027 .038 .014 .007 -.002 .013 O6 .2273 -.7351 .8137 .0132 .026 .014 .000 .002 .001 .003 O7 .0833 .5 .6683 .030 .016 .054 .016 0 -.007 0 O8 .2719 .5 .6291 .041 .031 .077 .021 0 .021 0