Dufrenite Moore P B American Mineralogist 55 (1970) 135-169 Crystal chemistry of the basic iron phosphates _database_code_amcsd 0000197 25.84 5.126 13.78 90 111.20 90 C2/c atom x y z Biso Fe1 0 0 0 1.15 Fe2 .25 .25 0 1.25 Fe3 .1529 -.0150 .1116 1.01 Fe4 .1401 -.2220 .3545 1.18 P1 .2185 .2612 .3312 1.20 P2 .0790 .2808 .3970 1.38 Ca 0 -.1474 .25 1.78 O1 .0887 .0660 .3293 1.14 O2 .0769 .5468 .3422 1.77 O3 .0193 .2255 .4030 1.85 O4 .1224 .2896 .5055 1.60 OH5 .1727 .2183 .0170 1.58 O6 .2134 .0108 .3878 1.47 O7 .2029 -.5144 .3907 2.13 OH8 .1289 -.2574 .2046 1.85 O9 .1766 .2529 .2203 1.75 O10 .2223 -.2034 .1670 1.62 OH11 .0769 .1439 .0645 2.07 OH12 .0243 -.2853 .1119 2.25