Na18Ca13Mg5(PO4)18 Alkemper J, Fuess H Zeitschrift fur Kristallographie 213 (1998) 282-287 The crystal structures of NaMgPO4, Na2CaMg(PO4)2 and Na18Ca13Mg5(PO4)18: new examples for glaserite related structures _database_code_amcsd 0011080 15.811 15.811 21.499 90 90 120 R-3m atom x y z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Ca1 0 0 0 .063 .063 .007 .032 0 0 Ca2 .3091 0 0 .019 .023 .017 .012 .004 .009 Na3 .3192 0 .5 .75 .019 .027 .021 .014 .007 .015 Ca3 .3192 0 .5 .25 .019 .027 .021 .014 .007 .015 Na4 .2157 -.2157 .2654 .4 .019 .019 .014 .004 -.002 .002 Ca4 .2157 -.2157 .2654 .6 .019 .019 .014 .004 -.002 .002 Na5 .1073 -.1073 .1052 .027 .027 .020 .014 .002 -.002 Na6 .2163 -.2163 -.1193 .85 .043 .043 .056 .027 .003 -.003 Ca6 .2211 -.2211 -.0462 .15 .032 .032 .070 .016 -.002 .002 Mgl 0 0 .3605 .012 .012 .012 .006 0 0 Mg2 0 0 .5 .010 .010 .008 .005 0 0 Mg3 0 0 .1609 .011 .011 .015 .006 0 0 P1 .2217 -.2217 .0991 .009 .009 .013 .006 .000 .000 O1 .2779 -.2779 .1019 .023 .023 .015 .019 -.001 .001 O2 .1983 -.1983 .1640 .029 .029 .021 .018 .005 -.005 O3 .2877 .4117 .0667 .022 .021 .029 .015 .002 -.005 P2 .1110 -.1110 -.0724 .012 .012 .017 .005 .002 -.002 O4 .1205 -.1205 .0026 .034 .034 .019 .013 -.004 .004 O5 .0564 -.0564 -.0862 .025 .025 .036 .016 -.003 .003 O6 .2682 .2138 .1002 .039 .016 .037 .011 -.016 -.010 P3 .4329 -.4329 -.0709 .014 .014 .012 .006 .001 -.001 O7 .3972 -.3972 -.0157 .040 .040 .018 .031 .003 -.003 O8 .4034 -.4034 -.1301 .165 .165 .015 .133 -.001 .001 O9A .5849 .5308 .0474 .3 .076 .018 .026 .021 .027 .005 O9B .6224 .5450 .0760 .7 .050 .015 .044 .014 .024 .001