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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: |
null
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Registro original: |
Embrapa Cerrados (CPAC) |
