Geochemistry of amphibole asbestos from northeastern Portugal and its use in monitoring the environmental impact of asbestos from quarrying
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://scielo.pt/scielo.php?script=sci_arttext&pid=S1647-581X2010000100007 |
Resumo: | At Donai, Pena Maquieira, and Mourisqueiro, in northeastern Portugal, amphibole asbestos minerals are associated with serpentinites, amphibole schists and steatitic rocks. In order to assess the environmental impact of these deposits, the Donai quarry and the talc mines of Pena Maquieira and Mourisqueiro were studied in detail, because long-term exposure to amphibole asbestos is known to cause pulmonary diseases. At Donai, tremolite asbestos occurs in shear zones and faults cutting serpentinites, whereas massive (non-fibrous) tremolite occurs as intercalations associated with amphibole schists, and chloritites. Serpentinites from the Donai quarry are mainly tremolite-free. At Pena Maquieira, tremolite asbestos fills faults cutting serpentinites. At Mourisqueiro, actinolite asbestos occurs within amphibole schists and steatitic rocks in a highly deformed zone. Geological mapping, examinations by petrographic microscope and electron-microprobe, and determinations of SiO2, CaO, and MgO for serpentinites, and CaO and MgO for steatitic rocks will help to assess the presence of admixed asbestos within these rocks. The identification of asbestos is essential in order to exploit these serpentinites and steatitic rocks with minimal disturbance of asbestiform minerals. |
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Geochemistry of amphibole asbestos from northeastern Portugal and its use in monitoring the environmental impact of asbestos from quarryingTremolite and actinolite asbestosamphibole schistsserpentinitessteatitic rocksAt Donai, Pena Maquieira, and Mourisqueiro, in northeastern Portugal, amphibole asbestos minerals are associated with serpentinites, amphibole schists and steatitic rocks. In order to assess the environmental impact of these deposits, the Donai quarry and the talc mines of Pena Maquieira and Mourisqueiro were studied in detail, because long-term exposure to amphibole asbestos is known to cause pulmonary diseases. At Donai, tremolite asbestos occurs in shear zones and faults cutting serpentinites, whereas massive (non-fibrous) tremolite occurs as intercalations associated with amphibole schists, and chloritites. Serpentinites from the Donai quarry are mainly tremolite-free. At Pena Maquieira, tremolite asbestos fills faults cutting serpentinites. At Mourisqueiro, actinolite asbestos occurs within amphibole schists and steatitic rocks in a highly deformed zone. Geological mapping, examinations by petrographic microscope and electron-microprobe, and determinations of SiO2, CaO, and MgO for serpentinites, and CaO and MgO for steatitic rocks will help to assess the presence of admixed asbestos within these rocks. The identification of asbestos is essential in order to exploit these serpentinites and steatitic rocks with minimal disturbance of asbestiform minerals.LNEG - Laboratório Nacional de Energia e Geologia2010-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S1647-581X2010000100007Comunicações Geológicas n.97 2010reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S1647-581X2010000100007Teixeira,R. J. S.Neiva,A. M. R.Gomes,M. E. P.info:eu-repo/semantics/openAccess2024-02-06T17:25:04Zoai:scielo:S1647-581X2010000100007Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:30:39.463859Repositório 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 |
Geochemistry of amphibole asbestos from northeastern Portugal and its use in monitoring the environmental impact of asbestos from quarrying |
title |
Geochemistry of amphibole asbestos from northeastern Portugal and its use in monitoring the environmental impact of asbestos from quarrying |
spellingShingle |
Geochemistry of amphibole asbestos from northeastern Portugal and its use in monitoring the environmental impact of asbestos from quarrying Teixeira,R. J. S. Tremolite and actinolite asbestos amphibole schists serpentinites steatitic rocks |
title_short |
Geochemistry of amphibole asbestos from northeastern Portugal and its use in monitoring the environmental impact of asbestos from quarrying |
title_full |
Geochemistry of amphibole asbestos from northeastern Portugal and its use in monitoring the environmental impact of asbestos from quarrying |
title_fullStr |
Geochemistry of amphibole asbestos from northeastern Portugal and its use in monitoring the environmental impact of asbestos from quarrying |
title_full_unstemmed |
Geochemistry of amphibole asbestos from northeastern Portugal and its use in monitoring the environmental impact of asbestos from quarrying |
title_sort |
Geochemistry of amphibole asbestos from northeastern Portugal and its use in monitoring the environmental impact of asbestos from quarrying |
author |
Teixeira,R. J. S. |
author_facet |
Teixeira,R. J. S. Neiva,A. M. R. Gomes,M. E. P. |
author_role |
author |
author2 |
Neiva,A. M. R. Gomes,M. E. P. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Teixeira,R. J. S. Neiva,A. M. R. Gomes,M. E. P. |
dc.subject.por.fl_str_mv |
Tremolite and actinolite asbestos amphibole schists serpentinites steatitic rocks |
topic |
Tremolite and actinolite asbestos amphibole schists serpentinites steatitic rocks |
description |
At Donai, Pena Maquieira, and Mourisqueiro, in northeastern Portugal, amphibole asbestos minerals are associated with serpentinites, amphibole schists and steatitic rocks. In order to assess the environmental impact of these deposits, the Donai quarry and the talc mines of Pena Maquieira and Mourisqueiro were studied in detail, because long-term exposure to amphibole asbestos is known to cause pulmonary diseases. At Donai, tremolite asbestos occurs in shear zones and faults cutting serpentinites, whereas massive (non-fibrous) tremolite occurs as intercalations associated with amphibole schists, and chloritites. Serpentinites from the Donai quarry are mainly tremolite-free. At Pena Maquieira, tremolite asbestos fills faults cutting serpentinites. At Mourisqueiro, actinolite asbestos occurs within amphibole schists and steatitic rocks in a highly deformed zone. Geological mapping, examinations by petrographic microscope and electron-microprobe, and determinations of SiO2, CaO, and MgO for serpentinites, and CaO and MgO for steatitic rocks will help to assess the presence of admixed asbestos within these rocks. The identification of asbestos is essential in order to exploit these serpentinites and steatitic rocks with minimal disturbance of asbestiform minerals. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S1647-581X2010000100007 |
url |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S1647-581X2010000100007 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S1647-581X2010000100007 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
LNEG - Laboratório Nacional de Energia e Geologia |
publisher.none.fl_str_mv |
LNEG - Laboratório Nacional de Energia e Geologia |
dc.source.none.fl_str_mv |
Comunicações Geológicas n.97 2010 reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
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 |
repository.mail.fl_str_mv |
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1799137370932510720 |