Occurrence of talc in soils with high iron content from the south-west of Spain
The mineralogy of the clay fractions of 2 soil profiles classified as an Alfic Dystric Eutrochrept (Soil I) and a Xerochreptic Haploxeralf (Soil II) has been determined. A notable feature of these soils is the presence of talc and the high iron content as goethite, hematite, lepidocrocite, and maghemite. Talc was the most abundant non-iron mineral of the clay fraction of Soil II. In Soil I, talc occurs as a residual phase from the parent material with its persistence in the profile aided by coatings of iron oxides, which inhibit further weathering. In these soils there is a high proportion of goethite accompanied by hematite. In Soil I the proportion of iron oxides changes within the profile. Another notable feature of this profile is the presence of maghemite in the upper horizons where this is the predominant iron oxide mineral.
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Commonwealth Scientific and Industrial Research Organization (Australia)
1996
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| Online Access: | http://hdl.handle.net/10261/65016 |
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dig-irnas-es-10261-650162019-09-16T12:37:03Z Occurrence of talc in soils with high iron content from the south-west of Spain Pérez-Rodríguez, José Luis Maqueda Porras, Celia Rodríguez-Rubio, P. Jiménez de Haro, María del Carmen The mineralogy of the clay fractions of 2 soil profiles classified as an Alfic Dystric Eutrochrept (Soil I) and a Xerochreptic Haploxeralf (Soil II) has been determined. A notable feature of these soils is the presence of talc and the high iron content as goethite, hematite, lepidocrocite, and maghemite. Talc was the most abundant non-iron mineral of the clay fraction of Soil II. In Soil I, talc occurs as a residual phase from the parent material with its persistence in the profile aided by coatings of iron oxides, which inhibit further weathering. In these soils there is a high proportion of goethite accompanied by hematite. In Soil I the proportion of iron oxides changes within the profile. Another notable feature of this profile is the presence of maghemite in the upper horizons where this is the predominant iron oxide mineral. Peer Reviewed 2013-01-24T16:58:23Z 2013-01-24T16:58:23Z 1996 2013-01-24T16:58:24Z artículo http://purl.org/coar/resource_type/c_6501 issn: 0004-9573 e-issn: 1446-568X Australian Journal of Soil Research 34: 635-651 (1996) http://hdl.handle.net/10261/65016 10.1071/SR9960635 en http://dx.doi.org/10.1071/SR9960635 none Commonwealth Scientific and Industrial Research Organization (Australia) |
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The mineralogy of the clay fractions of 2 soil profiles classified as an Alfic Dystric Eutrochrept (Soil I) and a Xerochreptic Haploxeralf (Soil II) has been determined. A notable feature of these soils is the presence of talc and the high iron content as goethite, hematite, lepidocrocite, and maghemite. Talc was the most abundant non-iron mineral of the clay fraction of Soil II. In Soil I, talc occurs as a residual phase from the parent material with its persistence in the profile aided by coatings of iron oxides, which inhibit further weathering. In these soils there is a high proportion of goethite accompanied by hematite. In Soil I the proportion of iron oxides changes within the profile. Another notable feature of this profile is the presence of maghemite in the upper horizons where this is the predominant iron oxide mineral. |
| format |
artículo |
| author |
Pérez-Rodríguez, José Luis Maqueda Porras, Celia Rodríguez-Rubio, P. Jiménez de Haro, María del Carmen |
| spellingShingle |
Pérez-Rodríguez, José Luis Maqueda Porras, Celia Rodríguez-Rubio, P. Jiménez de Haro, María del Carmen Occurrence of talc in soils with high iron content from the south-west of Spain |
| author_facet |
Pérez-Rodríguez, José Luis Maqueda Porras, Celia Rodríguez-Rubio, P. Jiménez de Haro, María del Carmen |
| author_sort |
Pérez-Rodríguez, José Luis |
| title |
Occurrence of talc in soils with high iron content from the south-west of Spain |
| title_short |
Occurrence of talc in soils with high iron content from the south-west of Spain |
| title_full |
Occurrence of talc in soils with high iron content from the south-west of Spain |
| title_fullStr |
Occurrence of talc in soils with high iron content from the south-west of Spain |
| title_full_unstemmed |
Occurrence of talc in soils with high iron content from the south-west of Spain |
| title_sort |
occurrence of talc in soils with high iron content from the south-west of spain |
| publisher |
Commonwealth Scientific and Industrial Research Organization (Australia) |
| publishDate |
1996 |
| url |
http://hdl.handle.net/10261/65016 |
| work_keys_str_mv |
AT perezrodriguezjoseluis occurrenceoftalcinsoilswithhighironcontentfromthesouthwestofspain AT maquedaporrascelia occurrenceoftalcinsoilswithhighironcontentfromthesouthwestofspain AT rodriguezrubiop occurrenceoftalcinsoilswithhighironcontentfromthesouthwestofspain AT jimenezdeharomariadelcarmen occurrenceoftalcinsoilswithhighironcontentfromthesouthwestofspain |
| _version_ |
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