Namuwite Groat L A American Mineralogist 81 (1996) 238-243 The crystal structure of namuwite, a mineral with Zn in tetrahedral and octahedral coordination, and its relationship to the synthetic basic zinc sulfates Note: U(1,2) for S has been changed to match symmetry constraints. _database_code_amcsd 0001775 8.330 8.330 10.540 90 90 120 P-3 atom x y z Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Zn1 0 0 .1672 .0138 .0138 .0621 .0069 0 0 Zn2 .1318 .7134 .0006 .0088 .0078 .0669 .0028 -.0009 -.0009 S 2/3 1/3 .2768 .0271 .0271 .0557 .01355 0 0 O1 2/3 1/3 .1429 .0242 O2 .8282 .5007 .3239 .0626 OH1 -.3730 .1083 -.0861 .0216 OH2 -.1891 .0609 .1169 .0294 Wat1 0 0 .3519 .0645 Wat2 .7173 .1077 .6031 .1790