Fluorapatite Luo Y, Hughes J M, Rakovan J, Pan Y American Mineralogist 94 (2009) 345-351 Site preference of U and Th in Cl, F, and Sr apatites Locality: synthetic Note: ThFAP _database_code_amcsd 0004839 9.375 9.375 6.883 90 90 120 P6_3/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) Ca1 2/3 1/3 .00107 .999 .0107 .0123 .0123 .0075 .0061 0 0 Ca2 .75984 .00764 1/4 .987 .0097 .0115 .0092 .0089 .0054 0 0 Th2 .75984 .00764 1/4 .013 .0097 .0115 .0092 .0089 .0054 0 0 P .60179 .63095 1/4 .0070 .0074 .0066 .0075 .0038 0 0 O1 .6743 .51573 1/4 .0115 .0144 .0109 .0126 .0090 0 0 O2 .41194 .53296 1/4 .0132 .0075 .0098 .0207 .0032 0 0 O3 .65868 .74320 .07044 .0154 .0246 .0138 .0111 .0121 .0071 .0042 F 0 0 1/4 .0220 .0119 .0119 .0422 0 0 .0060