Fairchildite Pertlik F Zeitschrift fur Kristallographie 157 (1981) 199-205 Structural investigations of synthetic fairchildite, K2Ca(CO3)2 Locality: synthetic Note: y(O1) changed to satisfy symmetry constraints _database_code_amcsd 0010845 5.294 5.294 13.355 90 90 120 P6_3/mmc atom x y z occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) KMe1 1/3 2/3 .0996 1.12 .0155 .0156 .0023 .00775 0 0 CaMe2 0 0 .25 1.33 .0236 .0236 .0019 .0118 0 0 C1 1/3 2/3 .75 1.41 .0137 .0137 .0038 .00685 0 0 C2 0 0 0 1.06 .026 .026 .0004 .013 0 0 O1 .52649 .05298 .25 1.85 .0248 .0129 .0039 .00645 0 0 O2 .0865 .1730 .9224 1/3 2.9 O3 .2380 0 0 1/6 2.9