Townendite Grey I E, Macrae C M, Mumme W G, Pring A American Mineralogist 95 (2010) 646-650 Townendite, Na8ZrSi6O18, a new uranium-bearing lovozerite group mineral from the Ilimaussaq alkaline complex, Southern Greenland Locality: the Ilimaussaq alkaline complex, Southern Greenland _database_code_amcsd 0005045 10.345 10.345 13.103 90 90 120 R-3m atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) ZrM 0 0 .5 .67 .017 .016 .016 .016 .008 0 0 SnM 0 0 .5 .04 .017 .016 .016 .016 .008 0 0 UM 0 0 .5 .02 .017 .016 .016 .016 .008 0 0 TiM 0 0 .5 .01 .017 .016 .016 .016 .008 0 0 NaA .5 0 0 .026 .024 .039 .020 .020 -.007 -.014 NaB .5 0 .5 .70 .036 .033 .057 .027 .029 .006 .012 NaC 0 0 .2537 .66 .026 .023 .023 .032 .011 0 0 MnC 0 0 .2537 .08 .026 .023 .023 .032 .011 0 0 FeC 0 0 .2537 .06 .026 .023 .023 .032 .011 0 0 YC 0 0 .2537 .07 .026 .023 .023 .032 .011 0 0 CaC 0 0 .2537 .08 .026 .023 .023 .032 .011 0 0 Si .1507 .3013 .0661 .020 .019 .020 .023 .010 -.001 -.002 O1 .2409 .7591 .0645 .041 .034 .034 .062 .023 -.003 .003 O2 .1133 .8867 .1741 .049 .069 .069 .024 .048 .002 -.002 O3 .2546 0 0 .044 .043 .028 .055 .014 .012 .023