New insights on mineralogy and genesis of kaolin deposits: The Burela kaolin deposit (Northwestern Spain)
The Burela deposit is the largest kaolin deposit in Spain, mined for more than 50 years, the product being mainly used for porcelain. Kaolin is dominantly associated with Lower Cambrian felsites, interbedded with quartzites, micaschists and metapelites (Cándana Series), and was strongly folded durin...
| Autores: | , , , , , , |
|---|---|
| Formato: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2016 |
| País: | España |
| Recursos: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/152699 |
| Acesso em linha: | https://hdl.handle.net/11441/152699 https://doi.org/10.1016/j.clay.2015.11.015 |
| Access Level: | acceso abierto |
| Palavra-chave: | Galicia Halloysite Isotopes Kaolin genesis Spain Trace elements |
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New insights on mineralogy and genesis of kaolin deposits: The Burela kaolin deposit (Northwestern Spain)Galán Huertos, EmilioAparicio Fernández, PatriciaFernández Caliani, Juan CarlosMiras Ruiz, AdolfoMárquez González, Marcial GabinoFallick, Anthony E.Clauer, NorbertGaliciaHalloysiteIsotopesKaolin genesisSpainTrace elementsThe Burela deposit is the largest kaolin deposit in Spain, mined for more than 50 years, the product being mainly used for porcelain. Kaolin is dominantly associated with Lower Cambrian felsites, interbedded with quartzites, micaschists and metapelites (Cándana Series), and was strongly folded during the Variscan orogeny. Kaolin layers were ductile and incompetent materials among more competent ones, producing many slides with a diastrophic appearance. Consequently, kaolin outcrops are morphologically very variable– i.e. pockets – and interlayered between metapelites and/or quartzites, resulting in complication for prospection and mining. The kaolin consists mainly of kaolinite, tubular halloysite, and spherical allophane along with quartz and minor illite. The content of kaolin minerals reaches up to 90% in the finer fractions (< 2 μm and < 1 μm). Geochemical analyses of trace and REE show a close relationship between kaolin and associated rocks. Two kaolin types can be differentiated: (i) massive, associated to felsite; and (ii) related to metapelite. A temperature range from 15 to 35 °C, with an average of approximately 28 °C was calculated on the basis of the isotopic signatures (δ18O, δD) for the kaolin materials. This scatter suggests that if continental weathering was involved in the kaolin formation on the lower side of the temperatures, it was not the only process, especially for kaolin associate with felsites and metapelites. The higher temperatures are indicative of a hydrothermal auto-metamorphic alteration, followed by a folding of the series that induced an apparently chaotic kaolin distribution with a combined continental weathering superimposed on the previous low-temperature hydrothermal felsite transformation.Ministerio de Educación y Ciencia BET2001-2415Junta de Andalucía RNM135ElsevierCristalografía, Mineralogía y Química AgrícolaMinisterio de Educación y Ciencia (MEC). EspañaJunta de Andalucía2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/152699https://doi.org/10.1016/j.clay.2015.11.015reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésApplied Clay Science, 131, 14-26.BET2001-2415RNM135https://doi.org/10.1016/j.clay.2015.11.015info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1526992026-06-17T12:51:07Z |
| dc.title.none.fl_str_mv |
New insights on mineralogy and genesis of kaolin deposits: The Burela kaolin deposit (Northwestern Spain) |
| title |
New insights on mineralogy and genesis of kaolin deposits: The Burela kaolin deposit (Northwestern Spain) |
| spellingShingle |
New insights on mineralogy and genesis of kaolin deposits: The Burela kaolin deposit (Northwestern Spain) Galán Huertos, Emilio Galicia Halloysite Isotopes Kaolin genesis Spain Trace elements |
| title_short |
New insights on mineralogy and genesis of kaolin deposits: The Burela kaolin deposit (Northwestern Spain) |
| title_full |
New insights on mineralogy and genesis of kaolin deposits: The Burela kaolin deposit (Northwestern Spain) |
| title_fullStr |
New insights on mineralogy and genesis of kaolin deposits: The Burela kaolin deposit (Northwestern Spain) |
| title_full_unstemmed |
New insights on mineralogy and genesis of kaolin deposits: The Burela kaolin deposit (Northwestern Spain) |
| title_sort |
New insights on mineralogy and genesis of kaolin deposits: The Burela kaolin deposit (Northwestern Spain) |
| dc.creator.none.fl_str_mv |
Galán Huertos, Emilio Aparicio Fernández, Patricia Fernández Caliani, Juan Carlos Miras Ruiz, Adolfo Márquez González, Marcial Gabino Fallick, Anthony E. Clauer, Norbert |
| author |
Galán Huertos, Emilio |
| author_facet |
Galán Huertos, Emilio Aparicio Fernández, Patricia Fernández Caliani, Juan Carlos Miras Ruiz, Adolfo Márquez González, Marcial Gabino Fallick, Anthony E. Clauer, Norbert |
| author_role |
author |
| author2 |
Aparicio Fernández, Patricia Fernández Caliani, Juan Carlos Miras Ruiz, Adolfo Márquez González, Marcial Gabino Fallick, Anthony E. Clauer, Norbert |
| author2_role |
author author author author author author |
| dc.contributor.none.fl_str_mv |
Cristalografía, Mineralogía y Química Agrícola Ministerio de Educación y Ciencia (MEC). España Junta de Andalucía |
| dc.subject.none.fl_str_mv |
Galicia Halloysite Isotopes Kaolin genesis Spain Trace elements |
| topic |
Galicia Halloysite Isotopes Kaolin genesis Spain Trace elements |
| description |
The Burela deposit is the largest kaolin deposit in Spain, mined for more than 50 years, the product being mainly used for porcelain. Kaolin is dominantly associated with Lower Cambrian felsites, interbedded with quartzites, micaschists and metapelites (Cándana Series), and was strongly folded during the Variscan orogeny. Kaolin layers were ductile and incompetent materials among more competent ones, producing many slides with a diastrophic appearance. Consequently, kaolin outcrops are morphologically very variable– i.e. pockets – and interlayered between metapelites and/or quartzites, resulting in complication for prospection and mining. The kaolin consists mainly of kaolinite, tubular halloysite, and spherical allophane along with quartz and minor illite. The content of kaolin minerals reaches up to 90% in the finer fractions (< 2 μm and < 1 μm). Geochemical analyses of trace and REE show a close relationship between kaolin and associated rocks. Two kaolin types can be differentiated: (i) massive, associated to felsite; and (ii) related to metapelite. A temperature range from 15 to 35 °C, with an average of approximately 28 °C was calculated on the basis of the isotopic signatures (δ18O, δD) for the kaolin materials. This scatter suggests that if continental weathering was involved in the kaolin formation on the lower side of the temperatures, it was not the only process, especially for kaolin associate with felsites and metapelites. The higher temperatures are indicative of a hydrothermal auto-metamorphic alteration, followed by a folding of the series that induced an apparently chaotic kaolin distribution with a combined continental weathering superimposed on the previous low-temperature hydrothermal felsite transformation. |
| publishDate |
2016 |
| dc.date.none.fl_str_mv |
2016 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion |
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article |
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acceptedVersion |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/11441/152699 https://doi.org/10.1016/j.clay.2015.11.015 |
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https://hdl.handle.net/11441/152699 https://doi.org/10.1016/j.clay.2015.11.015 |
| dc.language.none.fl_str_mv |
Inglés |
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Inglés |
| dc.relation.none.fl_str_mv |
Applied Clay Science, 131, 14-26. BET2001-2415 RNM135 https://doi.org/10.1016/j.clay.2015.11.015 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf application/pdf |
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Elsevier |
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Elsevier |
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reponame:idUS. Depósito de Investigación de la Universidad de Sevilla instname:Universidad de Sevilla (US) |
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Universidad de Sevilla (US) |
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idUS. Depósito de Investigación de la Universidad de Sevilla |
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idUS. Depósito de Investigación de la Universidad de Sevilla |
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