K2Mn2(BeF4)3 Guelylah A, Breczewski T, Madariaga G Acta Crystallographica C52 (1996) 2951-2954 A new langbeinite: dipotassium dimanganese tetrafluoroberyllate Locality: synthetic Note: anisoU's from ICSD _database_code_amcsd 0010310 10.075 10.075 10.075 90 90 90 P2_13 atom x y z Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) K1 .18818 .31182 .68818 .0359 .0359 .0359 .0359 .0036 -.0036 .0036 K2 .45198 .95198 .54802 .0423 .0424 .0424 .0424 .0031 -.0031 -.0031 Mn1 .33300 .33300 .33300 .0193 .0193 .0193 .0193 -.0036 -.0036 -.0036 Mn2 .59513 .59513 .59513 .0172 .0172 .0172 .0172 .0000 .0000 .0000 Be .2812 .6250 .5163 .018 .020 .021 .013 .004 .005 -.008 F1 .1871 .7243 .4506 .057 .031 .055 .086 .024 .001 .031 F2 .4221 .6752 .5106 .059 .021 .050 .106 -.004 -.007 .032 F3 .2650 .5017 .4295 .080 .093 .063 .085 .006 -.007 -.057 F4 .2402 .5869 .6542 .058 .082 .064 .029 .011 .024 .015