Mössbauer study of the crystallogenesis of iron hydroxides

Abstract

Pedogenesis of iron compounds in solids have been simulated by studying the influence of OH avai lability, water leaching and isomorphic substitution of iron by transitional elements on the crystallogenesis of iron hydroxides. The Mössbauer spectroscopy has shown that the appearance of oxide compounds instead of hydroxide is favoured both by high OH availability and, to some extend, by the presence of substitutional impurities. On the other hand, crystallization, which appeared as difficult when transition elements were present, was made easier by water leaching