Estremoz marbles, Portugal – a potential resource for high-whiteness industrial applications
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
Tipo de documento: | Artigo de conferência |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/13885 |
Resumo: | The dimension stone industry in the Estremoz marble region in SE Portugal is considerable, with several quarries operating different parts of a marble deposit exceeding 16.000 Mt. Annual production of marble dimension stone is 0,17 Mt (25 M€), in addition to 1,2 Mt of waste carbonate slurries and debris. Currently, only a small part of the quarry waste is reused, the remainder is stockpiled with detrimental effects on landscape and environment. A major challenge is to increase the reuse of mine waste to reduce the environmental impact and to create additional value. Some marble varieties within the Estremoz deposit are very white with generally low contents in silicate minerals, sulphides and graphite, as well as low contents of the chromophoric elements iron and manganese. Carbonate crystal-bound iron and manganese reduces whiteness and should be low. Preliminary whole-rock geochemical analysis shows that total sum iron and manganese are below 300ppm Fe+Mn in some cases, of which 70-80% may be allocated to carbonate, the remaining 20-30% to mineral impurities. Such low content of iron and manganese makes these marbles potentially suitable as raw material for high-whiteness mineral products. However, local variations in mineral content and geochemical composition are substantial, requiring additional assessment. |
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Estremoz marbles, Portugal – a potential resource for high-whiteness industrial applicationsMarblehigh-whitenessslurriescalcium carbonateThe dimension stone industry in the Estremoz marble region in SE Portugal is considerable, with several quarries operating different parts of a marble deposit exceeding 16.000 Mt. Annual production of marble dimension stone is 0,17 Mt (25 M€), in addition to 1,2 Mt of waste carbonate slurries and debris. Currently, only a small part of the quarry waste is reused, the remainder is stockpiled with detrimental effects on landscape and environment. A major challenge is to increase the reuse of mine waste to reduce the environmental impact and to create additional value. Some marble varieties within the Estremoz deposit are very white with generally low contents in silicate minerals, sulphides and graphite, as well as low contents of the chromophoric elements iron and manganese. Carbonate crystal-bound iron and manganese reduces whiteness and should be low. Preliminary whole-rock geochemical analysis shows that total sum iron and manganese are below 300ppm Fe+Mn in some cases, of which 70-80% may be allocated to carbonate, the remaining 20-30% to mineral impurities. Such low content of iron and manganese makes these marbles potentially suitable as raw material for high-whiteness mineral products. However, local variations in mineral content and geochemical composition are substantial, requiring additional assessment.ARBER Professional Congress Services2015-03-31T12:02:04Z2015-03-312014-10-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10174/13885http://hdl.handle.net/10174/13885porKorneliussen, Are; Lopes, Luis & Martins, Ruben. 2014. Estremoz marbles, Portugal – a potential resource for high-whiteness industrial applications. In: Tugrul, Atiye; Akdas, Hurriyet; Yavuz, Ali Bahadir & Yilmaz, Murat Editors. Proceedings of the V Global Stone Congress, Antalya - 22-25 October 2014, pp. 72. ARBER Professional Congress Services, Antalya, Turkey.simnaonaondlopes@uevora.ptrubevm@gmail.com247Korneliussen, AreLopes, LuísMartins, Rubeninfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T18:59:50Zoai:dspace.uevora.pt:10174/13885Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:07:18.485690Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Estremoz marbles, Portugal – a potential resource for high-whiteness industrial applications |
title |
Estremoz marbles, Portugal – a potential resource for high-whiteness industrial applications |
spellingShingle |
Estremoz marbles, Portugal – a potential resource for high-whiteness industrial applications Korneliussen, Are Marble high-whiteness slurries calcium carbonate |
title_short |
Estremoz marbles, Portugal – a potential resource for high-whiteness industrial applications |
title_full |
Estremoz marbles, Portugal – a potential resource for high-whiteness industrial applications |
title_fullStr |
Estremoz marbles, Portugal – a potential resource for high-whiteness industrial applications |
title_full_unstemmed |
Estremoz marbles, Portugal – a potential resource for high-whiteness industrial applications |
title_sort |
Estremoz marbles, Portugal – a potential resource for high-whiteness industrial applications |
author |
Korneliussen, Are |
author_facet |
Korneliussen, Are Lopes, Luís Martins, Ruben |
author_role |
author |
author2 |
Lopes, Luís Martins, Ruben |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Korneliussen, Are Lopes, Luís Martins, Ruben |
dc.subject.por.fl_str_mv |
Marble high-whiteness slurries calcium carbonate |
topic |
Marble high-whiteness slurries calcium carbonate |
description |
The dimension stone industry in the Estremoz marble region in SE Portugal is considerable, with several quarries operating different parts of a marble deposit exceeding 16.000 Mt. Annual production of marble dimension stone is 0,17 Mt (25 M€), in addition to 1,2 Mt of waste carbonate slurries and debris. Currently, only a small part of the quarry waste is reused, the remainder is stockpiled with detrimental effects on landscape and environment. A major challenge is to increase the reuse of mine waste to reduce the environmental impact and to create additional value. Some marble varieties within the Estremoz deposit are very white with generally low contents in silicate minerals, sulphides and graphite, as well as low contents of the chromophoric elements iron and manganese. Carbonate crystal-bound iron and manganese reduces whiteness and should be low. Preliminary whole-rock geochemical analysis shows that total sum iron and manganese are below 300ppm Fe+Mn in some cases, of which 70-80% may be allocated to carbonate, the remaining 20-30% to mineral impurities. Such low content of iron and manganese makes these marbles potentially suitable as raw material for high-whiteness mineral products. However, local variations in mineral content and geochemical composition are substantial, requiring additional assessment. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-10-01T00:00:00Z 2015-03-31T12:02:04Z 2015-03-31 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/13885 http://hdl.handle.net/10174/13885 |
url |
http://hdl.handle.net/10174/13885 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Korneliussen, Are; Lopes, Luis & Martins, Ruben. 2014. Estremoz marbles, Portugal – a potential resource for high-whiteness industrial applications. In: Tugrul, Atiye; Akdas, Hurriyet; Yavuz, Ali Bahadir & Yilmaz, Murat Editors. Proceedings of the V Global Stone Congress, Antalya - 22-25 October 2014, pp. 72. ARBER Professional Congress Services, Antalya, Turkey. sim nao nao nd lopes@uevora.pt rubevm@gmail.com 247 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
ARBER Professional Congress Services |
publisher.none.fl_str_mv |
ARBER Professional Congress Services |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799136557403209728 |