The Oxides and Hydroxides of Iron and Their Structural Inter-Relationships

Abstract

The transformations ia-x the iron oxide-hydroxide system have been interpreted in a rational crystallochemical manner, some bring characterized as topotactic and some as non-topotacfic. Crystallographic measurements have been made on the more reactive or metastable phases, particularly on the green rusts. The oxyhydroxides ~-]~eOOFI and ~-FeOOH have been examined more fully, but data on ald the phases have been checked. New data on transformations, such as FeCOa---> FeO and Fe(OH)~-+ FeO are reported.