Reppiaite Barbier J European Journal of Mineralogy 8 (1996) 77-84 Crystal structure of Ni5(AsO4)2(OH)4 and its comparison to other M5(XO4)2(OH)4 compounds _database_code_amcsd 0006613 9.291 9.008 5.149 90 98.70 90 C2/m atom x y z Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Ni1 .5 .31952 0 .00603 .00710 .00766 .00447 0 .00012 0 Ni2 .5 .15535 .5 .00584 .00674 .00701 .00516 0 .00094 0 Ni3 0 0 .5 .00623 .00830 .00625 .00534 0 .00048 0 As .68716 0 .05532 .00465 .00422 .00702 .00393 0 .00012 0 O1 .3690 .1521 .1252 .0078 .00874 .00834 .00728 -.00133 .00016 -.00222 O2 .8736 0 .1139 .0067 .00470 .00994 .00627 0 -.00079 0 O3 .6305 0 .3532 .0070 .00680 .00898 .00701 0 .00223 0 OH4 .3957 .3272 -.3628 .0064 .00690 .00736 .00625 -.00027 .00050 .00080