NaMg4(AsO4)3 Anissa H A, Brahim A, Amor H Acta Crystallographica E60 (2004) i77-i79 NaMg4(AsO4)3 _database_code_amcsd 0010433 6.8170 6.8170 19.242 90 90 90 I-42d atom x y z Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Na .5 -.5 0 .0128 .0121 .0121 .0141 0 0 0 Mg1 0 -.5 .02054 .0061 .0090 .0052 .0041 .0000 0 0 Mg2 .7588 -.75 .125 .0064 .0059 .0076 .0056 0 0 .0014 As1 0 0 0 .00350 .0037 .0037 .0032 0 0 0 As2 .34467 -.75 .125 .00424 .0048 .0038 .0041 0 0 .0000 O1 .5064 -.7959 .05961 .0077 .0078 .0104 .0050 .0004 .0000 -.0023 O2 .2227 -.5460 .09958 .0070 .0096 .0026 .0089 .0013 -.0022 .0000 O3 -.0581 .2068 .04410 .0073 .0101 .0048 .0072 -.0006 .0016 -.0038