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 0.01 M Note: Occupancies of the Oint sites are undetermined, O is used only as a scatterer _database_code_amcsd 0004948 5.1298 2.8445 7.5029 90.12 101.395 89.958 C-1 atom x y z occ Uiso Mn 0 0 0 .0226 O1 .3781 .0045 .1348 .0286 Oint .2613 -.1038 .4984 .527 .0155 Oint2 .4097 .3794 .5078 .559 .0032