Na-komarovite Balic-Zunic T, Petersen O V, Bernhardt H J, Micheelsen H I Neues Jahrbuch fur Mineralogie, Monatshefte 2002 (2002) 497-514 The crystal structure and mineralogical description of a Na-dominant komarovite from the Ilimaussaq alkaline complex, South Greenland Locality: Ilimaussaq, South Greenland _database_code_amcsd 0014922 7.310 24.588 7.402 90 90 90 Cmmm atom x y z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) K3 0 0 .186 .09 .028 .086 .031 0 0 0 Na3 0 0 .186 .41 .028 .086 .031 0 0 0 Na1 .25 .25 .5 .105 .0127 .0163 .0198 .0018 0 0 Na2 .5 .1509 .2384 .036 .026 .021 0 0 .004 Ca1 .25 .25 .5 .895 .0127 .0163 .0198 .0018 0 0 Ti1 .25 .25 0 .218 .0104 .0116 .0109 -.0017 0 0 Nb1 .25 .25 0 .782 .0104 .0116 .0109 -.0017 0 0 Nb2 0 .14545 .24854 .853 .0075 .0142 .0244 0 0 .0117 Ti2 0 .14545 .24854 .147 .0075 .0142 .0244 0 0 .0117 Si .2807 .06468 .5 .0054 .0067 .0089 .0002 0 0 O1 0 .2776 0 .008 .008 .014 0 0 0 O2 0 .1150 0 .016 .009 .012 0 0 0 O3 0 .1736 .5 .012 .014 .008 0 0 0 O4 .1890 .1967 .1917 .008 .013 .012 -.0012 .0013 .0016 O5 .1945 .0902 .3187 .017 .016 .009 .006 -.0012 .0006 O6 .5 .0764 .5 .005 .026 .030 0 0 0 O7 .2432 0 .5 .028 .007 .025 0 0 0 F 0 .3013 .5 .013 .018 .018 0 0 0 Wat1 .5 .0873 0 .055 .036 .049 0 0 0 Wat2 .216 0 .066 .5 .048 .042 .027 0 .003 0