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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
27/10/1997 |
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Data da última atualização: |
21/03/2025 |
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Autoria: |
TAYLOR, R. M.; SCHWERTMANN, U. |
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Afiliação: |
TECHNISCHE UNIVERSITÄT MÜNCHEN; TECHNISCHE UNIVERSITÄT MÜNCHEN. |
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Título: |
Maghemite in soils and its origin. |
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Ano de publicação: |
1974 |
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Fonte/Imprenta: |
Clay Minerals, v.10, p.289, 1974. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract 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. |
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Thesagro: |
Composição Química; Estrutura do Solo. |
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Thesaurus Nal: |
Maghemite. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 01082naa a2200169 a 4500
001 1557237
005 2025-03-21
008 1974 bl uuuu u00u1 u #d
100 1 $aTAYLOR, R. M.
245 $aMaghemite in soils and its origin.$h[electronic resource]
260 $c1974
520 $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.
650 $aMaghemite
650 $aComposição Química
650 $aEstrutura do Solo
700 1 $aSCHWERTMANN, U.
773 $tClay Minerals$gv.10, p.289, 1974.
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| 1. |  | ZILLI, M.; SCARABELLO, M.; SOTERRONI, A. C.; VALIN, H.; MOSNIER, A.; LECLÈRE, D.; HAVLÍK, P.; KRAXNER, F.; LOPES, M. A.; RAMOS, F. M. The impact of climate change on Brazil's agriculture. Science of the Total Environment, v. 740, n. 139384, 2020.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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