[en] The Moessbauer spectra of hexacyanoferrates(II) of alkaline earth metals (Mg, Ca, Sr, Ba) and La, Ti, Zr, Th, VO²⁺ and UO₂²⁺ exhibit single line (δ = -0.08-0.20 mms^-1) at room temperature. Uranyl hexacyanoferrate(II), however, exhibits a large line width (Γ=0.53 mms^-1) probably due to unresolved quadrupole splitting suggesting some interaction of UO₂²⁺ with [Fe(CN)₆]^4-. In general, δ values show decreasing trend with increasing charge on the outer cations. Thermogravimetric studies upto 600decC show constant weight in the range 52.0-80% except for Mg hexacyanoferrate(II) which gave 30.3% residue. An attempt has been made to identify the intermediate and end products by Moessbauer spectroscopy. It is suggested that in most cases, a mixture of ferrites, oxides and carbide (Fe₃C) along with iron metal may be formed as end products (author). 23 refs., 2 figs., 1 tab