Cuspidine Piotrowski A, Kahlenberg V, Fischer R X American Mineralogist 85 (1999) 1534-1539 Na2Ca2(P2O7)F2, the first diphosphate of the cuspidine family Sample: split position O1 _database_code_amcsd 0002594 10.8730 10.5516 7.4287 90 109.74 90 P2_1/n 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 .5754 .8767 .6647 .83 .0127 .0105 .0098 .0034 .0043 .0009 Na1 .5754 .8767 .6647 .17 .0127 .0105 .0098 .0034 .0043 .0009 Ca2 .8070 .1026 .5277 .45 .0134 .0101 .0140 -.0025 .0058 -.0008 Na2 .8070 .1026 .5277 .55 .0134 .0101 .0140 -.0025 .0058 -.0008 Ca3 .8174 .0835 .0339 .54 .0138 .0135 .0146 -.0039 .0046 -.0017 Na3 .8174 .0835 .0339 .46 .0138 .0135 .0146 -.0039 .0046 -.0017 Ca4 .5819 .8869 .1625 .19 .0163 .0173 .0142 .0038 .0057 .0011 Na4 .5819 .8869 .1625 .81 .0163 .0173 .0142 .0038 .0057 .0011 P1 .1241 .1832 .6435 .0083 .0075 .0073 .0003 .0037 -.0016 P2 .6226 .3172 .7296 .0072 .0066 .0078 -.0002 .0023 -.0007 F1 .6126 .0022 .9231 .0116 .0137 .0161 -.0031 .0039 -.0027 F2 .6097 .0051 .4371 .0108 .0130 .0151 .0017 .0052 .0008 O1A .1670 .2114 .4546 .5 .0284 O1B .0752 .1977 .4130 .5 .0287 O2 .8490 .9541 .7885 .0779 .0117 .0353 .0147 .0235 .0028 O3 .9975 .2320 .6535 .0125 .0206 .0850 -.0017 .0178 -.0253 O4 .1506 .0458 .6888 .0409 .0108 .0385 .0065 .0188 .0074 O5 .9977 .2300 .0903 .0194 .0280 .0606 -.0061 -.0100 .0296 O6 .7392 .2353 .7466 .0110 .0252 .0833 .0015 .0086 -.0310 O7 .2399 .2659 .7412 .0137 .0246 .0648 .0022 -.0020 -.0217