Fluorapatite Hughes J M, Cameron M, Crowley K D American Mineralogist 74 (1989) 870-876 Structural variations in natural F, OH, and Cl apatites Locality: Durango Mexico _database_code_amcsd 0001256 9.3973 9.3973 6.8782 90 90 120 P6_3/m atom x y z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Ca1 2/3 1/3 .0010 .00394 .00394 0.0033 .00197 0 0 Ca2 -.00712 .24227 .25 .00256 .00361 0.0034 .001495 0 0 P .36895 .39850 .25 .00208 .00231 0.0032 .00125 0 0 O1 .4849 .3273 .25 0.0037 0.0044 0.0055 .00265 0 0 O2 .4667 .5875 .25 0.0038 0.0030 0.0088 0.0014 0 0 O3 .2575 .3421 .0705 0.0043 0.0077 0.0055 0.0038 -.0016 -.0026 F 0 0 .25 0.0029 0.0029 0.0022 .00145 0 0