01082naa a2200169 a 450000100080000000500110000800800410001910000180006024500620007826000090014052006430014965000140079265000260080665000220083270000200085477300380087415572372025-03-21       1974    bl uuuu     u00u1 u    #d1 aTAYLOR, R. M.  aMaghemite in soils and its origin.h[electronic resource]  c1974  aAbstract A magnetic iron oxide is a common constituent of ferruginous concretions in highly weathered Australian soils and is generally associated with varying proportions of hematite and occasionally with goethite. The X-ray diffraction pattern and the low Fe (11) contents (4-15% of total Fe) of this magnetic phase identify it as maghemite which was further confirmed by IR and DTA. This maghemite is only slightly soluble in dithionite but readily in 1:1 HCl or oxalic acid. From the Fe (11) contents and mineralogical associations in soil concretions, conditions for maghemite formation under near pedogenic conditions are suggested.  aMaghemite  aComposição Química  aEstrutura do Solo1 aSCHWERTMANN, U.  tClay Mineralsgv.10, p.289, 1974.