Citation: Lopano, C. L.; Heaney, P. J.; Post, J. E. (2009). 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. American Mineralogist, 94, pp. 816-826.