Birnessite Lopano C L, Heaney P J, Post J E American Mineralogist 94 (2009) 816-826 Cs-exchange in birnessite: Reaction mechanisms inferred from time-resolved X-ray diffraction and transmission electron microscopy Note: Solution concentration 0.05 M Note: Occupancies of the Oint sites are undetermined, O is used only as a scatterer _database_code_amcsd 0004949 5.1349 2.8465 7.5135 89.94 101.561 89.997 C-1 atom x y z occ Uiso Mn 0 0 0 .0296 O1 .3710 -.0205 .1254 .0355 Oint .2221 -.4317 .5177 .399 .0102 Oint2 .3980 .3515 .5061 .707 .0129