Gahnite Halenius U, Bosi F American Mineralogist 99 (2014) 261-266 Color of Mn-bearing gahnite: A first example of electronic transitions in heterovalent exchange coupled IVMn2+-VIMn3+ pairs in minerals. Locality: Kittelgruvan, Nordmark, Varmland, Sweden _database_code_amcsd 0020092 8.1123 8.1123 8.1123 90 90 90 *Fd-3m .125 .125 .125 atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) ZnT .125 .125 .125 .52 .00452 .00452 .00452 .00452 0 0 0 MgT .125 .125 .125 .34 .00452 .00452 .00452 .00452 0 0 0 MnT .125 .125 .125 .08 .00452 .00452 .00452 .00452 0 0 0 AlT .125 .125 .125 .06 .00452 .00452 .00452 .00452 0 0 0 AlM .5 .5 .5 .94 .00388 .00388 .00388 .00388 -.00035 -.00035 -.00035 MnM .5 .5 .5 .03 .00388 .00388 .00388 .00388 -.00035 -.00035 -.00035 FeM .5 .5 .5 .005 .00388 .00388 .00388 .00388 -.00035 -.00035 -.00035 MgM .5 .5 .5 .02 .00388 .00388 .00388 .00388 -.00035 -.00035 -.00035 MnM .5 .5 .5 .005 .00388 .00388 .00388 .00388 -.00035 -.00035 -.00035 O .26404 .26404 .26404 .00415 .00415 .00415 .00415 -.00030 -.00030 -.00030