Ianbruceite Cooper M A, Abdu Y A, Ball N A, Hawthorne F C, Back M E, Tait K T, Schluter J, Malcherek T, Pohl D, Gebhard G Mineralogical Magazine 76 (2012) 1119-1131 Ianbruceite, ideally [Zn2(OH)(H2O)(AsO4)](H2O)2, a new arsenate mineral from the Tsumeb mine, Otjikoto (Oshikoto) region, Namibia: description and crystal structure Locality: Tsumeb mine, Namibia _database_code_amcsd 0019546 11.793 9.1138 6.8265 90 103.859 90 P2_1/c atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) As1 .36080 .91756 .0952 .0189 .0380 .0106 .0089 .0004 .0073 -.0008 As2 .806 .777 .492 .048 .004 As3 .778 .686 .484 .031 .011 Zn1 .6179 .0413 .4016 .0208 .0387 .0120 .0129 .0015 .0083 -.0005 Zn2 .6059 .7591 .1490 .0235 .0398 .0198 .0124 -.0003 .0093 -.0051 O1 .4319 .7571 .0969 .017 .020 .015 .017 .004 .006 .001 Wat2 .7964 .0882 .5118 .030 .009 .045 .030 -.002 -.003 .027 O3 .2201 .8861 .081 .032 .022 .020 .054 -.002 .011 -.017 OH4 .6690 .8134 .4307 .024 .048 .011 .016 -.002 .011 .006 O5 .4267 .0110 .3102 .023 .048 .012 .010 -.000 .007 -.002 O6 .3725 .0130 -.1104 .023 .038 .023 .007 -.002 .006 .004 Wat7 .056 .987 -.203 .96 .17 .10 .11 .24 .035 -.08 -.03 Wat8 .913 .769 .585 .91 .17 .11 .13 .25 -.04 -.05 -.00