Geoelectrical classification of Gypsum Rocks

Abstract Gypsum rocks are widely exploited in the world as industrial minerals. The purity of the gypsum rocks (percentage in gypsum mineral in the whole rock) is a critical factor to evaluate the potential exploitability of a gypsum deposit. It is considered than purities higher than 80% in gypsum...

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Autores: Guinea Maysounave, Ander, Playà i Pous, Elisabet, Rivero Marginedas, Lluís, Himi, Mahjoub, Bosch, Ricard
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2010
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/163394
Acesso em linha:https://hdl.handle.net/2445/163394
Access Level:acceso abierto
Palavra-chave:Guix
Propietats elèctriques
Classificació dels minerals
Plaster
Electric properties
Classification of minerals
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spelling Geoelectrical classification of Gypsum RocksGuinea Maysounave, AnderPlayà i Pous, ElisabetRivero Marginedas, LluísHimi, MahjoubBosch, RicardGuixPropietats elèctriquesClassificació dels mineralsPlasterElectric propertiesClassification of mineralsAbstract Gypsum rocks are widely exploited in the world as industrial minerals. The purity of the gypsum rocks (percentage in gypsum mineral in the whole rock) is a critical factor to evaluate the potential exploitability of a gypsum deposit. It is considered than purities higher than 80% in gypsum are required to be economically profitable. Gypsum deposits have been studied with geoelectrical methods; a direct relationship between the electrical resistivity values of the gypsum rocks and its lithological composition has been established, with the presence of lutites being the main controlling factor in the geoelectrical response of the deposit. This phenomenon has been quantified in the present study, by means of a combination of theoretical calculations, laboratory measurements and field data acquisition. Direct modelling has been performed; the data have been inverted to obtain the mean electrical resistivity of the models. The laboratory measurements have been obtained from artificial gypsum-clay mixture pills, and the electrical resistivity has been measured using a simple electrical circuit with direct current power supply. Finally, electrical resistivity tomography data have been acquired in different evaporite Tertiary basins located in North East Spain; the selected gypsum deposits have different gypsum compositions. The geoelectrical response of gypsum rocks has been determined by comparing the resistivity values obtained from theoretical models, laboratory tests and field examples. A geoelectrical classification of gypsum rocks defining three types of gypsum rocks has been elaborated: (a) Pure Gypsum Rocks ([75% of gypsum content), (b)Transitional Gypsum Rocks (75 55%), and (c) Lutites and Gypsum-rich Lutites (\55%). From the economic point of view, the Pure Gypsum Rocks, displaying a resistivity value of [800 ohm.m, can be exploited as industrial rocks. The methodology used could be applied in other geoelectrical rock studies, given that this relationship between the resistive particles embedded within a conductive matrix depends on the connectivity of the matrix particles.Springer Science + Business Media2020202020102020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion31 p.application/pdfhttps://hdl.handle.net/2445/163394Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1007/s10712-010-9107-xSurveys in Geophysics, 2010, vol. 31, p. 557-580https://doi.org/10.1007/s10712-010-9107-x(c) Springer Science + Business Media, 2010info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1633942026-05-29T05:05:01Z
dc.title.none.fl_str_mv Geoelectrical classification of Gypsum Rocks
title Geoelectrical classification of Gypsum Rocks
spellingShingle Geoelectrical classification of Gypsum Rocks
Guinea Maysounave, Ander
Guix
Propietats elèctriques
Classificació dels minerals
Plaster
Electric properties
Classification of minerals
title_short Geoelectrical classification of Gypsum Rocks
title_full Geoelectrical classification of Gypsum Rocks
title_fullStr Geoelectrical classification of Gypsum Rocks
title_full_unstemmed Geoelectrical classification of Gypsum Rocks
title_sort Geoelectrical classification of Gypsum Rocks
dc.creator.none.fl_str_mv Guinea Maysounave, Ander
Playà i Pous, Elisabet
Rivero Marginedas, Lluís
Himi, Mahjoub
Bosch, Ricard
author Guinea Maysounave, Ander
author_facet Guinea Maysounave, Ander
Playà i Pous, Elisabet
Rivero Marginedas, Lluís
Himi, Mahjoub
Bosch, Ricard
author_role author
author2 Playà i Pous, Elisabet
Rivero Marginedas, Lluís
Himi, Mahjoub
Bosch, Ricard
author2_role author
author
author
author
dc.subject.none.fl_str_mv Guix
Propietats elèctriques
Classificació dels minerals
Plaster
Electric properties
Classification of minerals
topic Guix
Propietats elèctriques
Classificació dels minerals
Plaster
Electric properties
Classification of minerals
description Abstract Gypsum rocks are widely exploited in the world as industrial minerals. The purity of the gypsum rocks (percentage in gypsum mineral in the whole rock) is a critical factor to evaluate the potential exploitability of a gypsum deposit. It is considered than purities higher than 80% in gypsum are required to be economically profitable. Gypsum deposits have been studied with geoelectrical methods; a direct relationship between the electrical resistivity values of the gypsum rocks and its lithological composition has been established, with the presence of lutites being the main controlling factor in the geoelectrical response of the deposit. This phenomenon has been quantified in the present study, by means of a combination of theoretical calculations, laboratory measurements and field data acquisition. Direct modelling has been performed; the data have been inverted to obtain the mean electrical resistivity of the models. The laboratory measurements have been obtained from artificial gypsum-clay mixture pills, and the electrical resistivity has been measured using a simple electrical circuit with direct current power supply. Finally, electrical resistivity tomography data have been acquired in different evaporite Tertiary basins located in North East Spain; the selected gypsum deposits have different gypsum compositions. The geoelectrical response of gypsum rocks has been determined by comparing the resistivity values obtained from theoretical models, laboratory tests and field examples. A geoelectrical classification of gypsum rocks defining three types of gypsum rocks has been elaborated: (a) Pure Gypsum Rocks ([75% of gypsum content), (b)Transitional Gypsum Rocks (75 55%), and (c) Lutites and Gypsum-rich Lutites (\55%). From the economic point of view, the Pure Gypsum Rocks, displaying a resistivity value of [800 ohm.m, can be exploited as industrial rocks. The methodology used could be applied in other geoelectrical rock studies, given that this relationship between the resistive particles embedded within a conductive matrix depends on the connectivity of the matrix particles.
publishDate 2010
dc.date.none.fl_str_mv 2010
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/163394
url https://hdl.handle.net/2445/163394
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1007/s10712-010-9107-x
Surveys in Geophysics, 2010, vol. 31, p. 557-580
https://doi.org/10.1007/s10712-010-9107-x
dc.rights.none.fl_str_mv (c) Springer Science + Business Media, 2010
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Springer Science + Business Media, 2010
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 31 p.
application/pdf
dc.publisher.none.fl_str_mv Springer Science + Business Media
publisher.none.fl_str_mv Springer Science + Business Media
dc.source.none.fl_str_mv Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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