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The influence of iron substitution on the magnetic properties of hausmannite, Mn2+(Fe,Mn)3+2O4
iron substitution magnetic properties hausmannite Mn2+(Fe,Mn)3+2O4
2012/3/31
The occurrence of hausmannite with an apparent Curie temperature close to 750 K, instead of 41.8 K was recently described from hydrothermally altered manganese ore from the Kalahari manganese field, S...
Electron Transfer Processes Between Hydroquinone and Hausmannite (Mn3O4)
Electron spin resonance Electron transfer Hausmannite Hydroquinone Manganese Oxidation
2012/1/9
A kinetic study of the oxidation of hydroquinone by aqueous suspensions of hausmannite at pH 6 was conducted using an on-line analysis system. Electron transfer between hydroquinone and the oxide was ...
Transformation of Hausmannite into Birnessite in Alkaline Media
Alkaline solution Birnessite Dissolution Hausmannite Manganese Synthesis
2012/1/9
The transformation of hausmannite (Mn3O4) into a K-bearing, 7-A phyllomanganate (K-birnessite) in KOH was followed using X-ray powder diffraction and transmission electron microscopy. The transformati...