The geology and mineralogy of a range of kaolins from the Santa Cruz and Chubut Provinces, Patagonia (Argentina)

Autores
Dominguez, Eduardo Alejandro; Iglesias, Claudio; Dondi, Michelle
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In the Santa Cruz and Chubut provinces, Patagonia, Argentina, kaolin deposits were formed by "in situ" alteration of volcaniclastic rocks, such as the Bajo Grande, Chon Aike or Marifil Formations, or by erosion, transportation, and deposition of residual clays in small basins. This paper describes the genesis; geology; mineralogy; major, minor, and trace element geochemistry; grain size distribution; and specific surface area of natural and washed kaolins in an attempt to understand their behavior in the ceramic process. The sedimentary clays of the Baqueró Fm Lower Member, related to the Bajo Grande basement, are kaolinitic-smectitic, very fine-grained, and with a very high specific surface area. The clays related to the Chon Aike or Marifil Fms are kaolinitic, showing intermediate values of specific surface area and a coarser particle size distribution, associated with quite a fine-grained texture. The Baqueró Fm Upper Member received a considerable pyroclastic supply, fostering the development of a fine-grained clay in which kaolinite (± halloysite) with higher values of kaolinite crystal order prevailed. Primary kaolins - derived from weathering of pyroclastic sequences of Chon Aike and Marifil Fms - are coarse-grained, composed of kaolinite + quartz ± halloysite and exhibit a very low specific surface area. Alteration of mostly crystalline pyroclastics yielded ordered kaolinite and illite (+ halloysite) with a fine particle size distribution and intermediate values of specific surface area. Alteration of mainly vitreous pyroclastics produced halloysite (+ kaolinite) with a fine-grained texture and moderately high values of specific surface area. A supergene origin of primary kaolins is inferred on the basis of palaeoclimatic and geochemical evidence that corroborates stable isotopic data. The mineralogy, grain size, and textural characteristics of clays are controlled by parent rock composition (primary kaolins) or by provenance and proximity to source areas (sedimentary kaolins).
Fil: Dominguez, Eduardo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet-Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. ; Argentina
Fil: Iglesias, Claudio. Piedra Grande S.A. ; Argentina
Fil: Dondi, Michelle. Istituto di Scienza e Tecnologia dei Materiali Ceramici; Italia
Materia
Clay Mineralogy
Kaolin
Particle Size Distribution
Patagonia
Specific Surface Area
Weathering
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/76933
Acceder
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spelling The geology and mineralogy of a range of kaolins from the Santa Cruz and Chubut Provinces, Patagonia (Argentina)Dominguez, Eduardo AlejandroIglesias, ClaudioDondi, MichelleClay MineralogyKaolinParticle Size DistributionPatagoniaSpecific Surface AreaWeatheringhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1In the Santa Cruz and Chubut provinces, Patagonia, Argentina, kaolin deposits were formed by "in situ" alteration of volcaniclastic rocks, such as the Bajo Grande, Chon Aike or Marifil Formations, or by erosion, transportation, and deposition of residual clays in small basins. This paper describes the genesis; geology; mineralogy; major, minor, and trace element geochemistry; grain size distribution; and specific surface area of natural and washed kaolins in an attempt to understand their behavior in the ceramic process. The sedimentary clays of the Baqueró Fm Lower Member, related to the Bajo Grande basement, are kaolinitic-smectitic, very fine-grained, and with a very high specific surface area. The clays related to the Chon Aike or Marifil Fms are kaolinitic, showing intermediate values of specific surface area and a coarser particle size distribution, associated with quite a fine-grained texture. The Baqueró Fm Upper Member received a considerable pyroclastic supply, fostering the development of a fine-grained clay in which kaolinite (± halloysite) with higher values of kaolinite crystal order prevailed. Primary kaolins - derived from weathering of pyroclastic sequences of Chon Aike and Marifil Fms - are coarse-grained, composed of kaolinite + quartz ± halloysite and exhibit a very low specific surface area. Alteration of mostly crystalline pyroclastics yielded ordered kaolinite and illite (+ halloysite) with a fine particle size distribution and intermediate values of specific surface area. Alteration of mainly vitreous pyroclastics produced halloysite (+ kaolinite) with a fine-grained texture and moderately high values of specific surface area. A supergene origin of primary kaolins is inferred on the basis of palaeoclimatic and geochemical evidence that corroborates stable isotopic data. The mineralogy, grain size, and textural characteristics of clays are controlled by parent rock composition (primary kaolins) or by provenance and proximity to source areas (sedimentary kaolins).Fil: Dominguez, Eduardo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet-Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. ; ArgentinaFil: Iglesias, Claudio. Piedra Grande S.A. ; ArgentinaFil: Dondi, Michelle. Istituto di Scienza e Tecnologia dei Materiali Ceramici; ItaliaElsevier Science2008-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/76933Dominguez, Eduardo Alejandro; Iglesias, Claudio; Dondi, Michelle; The geology and mineralogy of a range of kaolins from the Santa Cruz and Chubut Provinces, Patagonia (Argentina); Elsevier Science; Applied Clay Science; 40; 1-4; 6-2008; 124-1420169-1317CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S016913170700138Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.clay.2007.07.009info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:04:45Zoai:ri.conicet.gov.ar:11336/76933instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:04:46.225CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The geology and mineralogy of a range of kaolins from the Santa Cruz and Chubut Provinces, Patagonia (Argentina)
title The geology and mineralogy of a range of kaolins from the Santa Cruz and Chubut Provinces, Patagonia (Argentina)
spellingShingle The geology and mineralogy of a range of kaolins from the Santa Cruz and Chubut Provinces, Patagonia (Argentina)
Dominguez, Eduardo Alejandro
Clay Mineralogy
Kaolin
Particle Size Distribution
Patagonia
Specific Surface Area
Weathering
title_short The geology and mineralogy of a range of kaolins from the Santa Cruz and Chubut Provinces, Patagonia (Argentina)
title_full The geology and mineralogy of a range of kaolins from the Santa Cruz and Chubut Provinces, Patagonia (Argentina)
title_fullStr The geology and mineralogy of a range of kaolins from the Santa Cruz and Chubut Provinces, Patagonia (Argentina)
title_full_unstemmed The geology and mineralogy of a range of kaolins from the Santa Cruz and Chubut Provinces, Patagonia (Argentina)
title_sort The geology and mineralogy of a range of kaolins from the Santa Cruz and Chubut Provinces, Patagonia (Argentina)
dc.creator.none.fl_str_mv Dominguez, Eduardo Alejandro
Iglesias, Claudio
Dondi, Michelle
author Dominguez, Eduardo Alejandro
author_facet Dominguez, Eduardo Alejandro
Iglesias, Claudio
Dondi, Michelle
author_role author
author2 Iglesias, Claudio
Dondi, Michelle
author2_role author
author
dc.subject.none.fl_str_mv Clay Mineralogy
Kaolin
Particle Size Distribution
Patagonia
Specific Surface Area
Weathering
topic Clay Mineralogy
Kaolin
Particle Size Distribution
Patagonia
Specific Surface Area
Weathering
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In the Santa Cruz and Chubut provinces, Patagonia, Argentina, kaolin deposits were formed by "in situ" alteration of volcaniclastic rocks, such as the Bajo Grande, Chon Aike or Marifil Formations, or by erosion, transportation, and deposition of residual clays in small basins. This paper describes the genesis; geology; mineralogy; major, minor, and trace element geochemistry; grain size distribution; and specific surface area of natural and washed kaolins in an attempt to understand their behavior in the ceramic process. The sedimentary clays of the Baqueró Fm Lower Member, related to the Bajo Grande basement, are kaolinitic-smectitic, very fine-grained, and with a very high specific surface area. The clays related to the Chon Aike or Marifil Fms are kaolinitic, showing intermediate values of specific surface area and a coarser particle size distribution, associated with quite a fine-grained texture. The Baqueró Fm Upper Member received a considerable pyroclastic supply, fostering the development of a fine-grained clay in which kaolinite (± halloysite) with higher values of kaolinite crystal order prevailed. Primary kaolins - derived from weathering of pyroclastic sequences of Chon Aike and Marifil Fms - are coarse-grained, composed of kaolinite + quartz ± halloysite and exhibit a very low specific surface area. Alteration of mostly crystalline pyroclastics yielded ordered kaolinite and illite (+ halloysite) with a fine particle size distribution and intermediate values of specific surface area. Alteration of mainly vitreous pyroclastics produced halloysite (+ kaolinite) with a fine-grained texture and moderately high values of specific surface area. A supergene origin of primary kaolins is inferred on the basis of palaeoclimatic and geochemical evidence that corroborates stable isotopic data. The mineralogy, grain size, and textural characteristics of clays are controlled by parent rock composition (primary kaolins) or by provenance and proximity to source areas (sedimentary kaolins).
Fil: Dominguez, Eduardo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet-Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. ; Argentina
Fil: Iglesias, Claudio. Piedra Grande S.A. ; Argentina
Fil: Dondi, Michelle. Istituto di Scienza e Tecnologia dei Materiali Ceramici; Italia
description In the Santa Cruz and Chubut provinces, Patagonia, Argentina, kaolin deposits were formed by "in situ" alteration of volcaniclastic rocks, such as the Bajo Grande, Chon Aike or Marifil Formations, or by erosion, transportation, and deposition of residual clays in small basins. This paper describes the genesis; geology; mineralogy; major, minor, and trace element geochemistry; grain size distribution; and specific surface area of natural and washed kaolins in an attempt to understand their behavior in the ceramic process. The sedimentary clays of the Baqueró Fm Lower Member, related to the Bajo Grande basement, are kaolinitic-smectitic, very fine-grained, and with a very high specific surface area. The clays related to the Chon Aike or Marifil Fms are kaolinitic, showing intermediate values of specific surface area and a coarser particle size distribution, associated with quite a fine-grained texture. The Baqueró Fm Upper Member received a considerable pyroclastic supply, fostering the development of a fine-grained clay in which kaolinite (± halloysite) with higher values of kaolinite crystal order prevailed. Primary kaolins - derived from weathering of pyroclastic sequences of Chon Aike and Marifil Fms - are coarse-grained, composed of kaolinite + quartz ± halloysite and exhibit a very low specific surface area. Alteration of mostly crystalline pyroclastics yielded ordered kaolinite and illite (+ halloysite) with a fine particle size distribution and intermediate values of specific surface area. Alteration of mainly vitreous pyroclastics produced halloysite (+ kaolinite) with a fine-grained texture and moderately high values of specific surface area. A supergene origin of primary kaolins is inferred on the basis of palaeoclimatic and geochemical evidence that corroborates stable isotopic data. The mineralogy, grain size, and textural characteristics of clays are controlled by parent rock composition (primary kaolins) or by provenance and proximity to source areas (sedimentary kaolins).
publishDate 2008
dc.date.none.fl_str_mv 2008-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/76933
Dominguez, Eduardo Alejandro; Iglesias, Claudio; Dondi, Michelle; The geology and mineralogy of a range of kaolins from the Santa Cruz and Chubut Provinces, Patagonia (Argentina); Elsevier Science; Applied Clay Science; 40; 1-4; 6-2008; 124-142
0169-1317
CONICET Digital
CONICET
url http://hdl.handle.net/11336/76933
identifier_str_mv Dominguez, Eduardo Alejandro; Iglesias, Claudio; Dondi, Michelle; The geology and mineralogy of a range of kaolins from the Santa Cruz and Chubut Provinces, Patagonia (Argentina); Elsevier Science; Applied Clay Science; 40; 1-4; 6-2008; 124-142
0169-1317
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S016913170700138X
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.clay.2007.07.009
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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