The Poopó Polymetallic Epithermal Deposit, Bolivia: Mineralogy, Genetic Constraints, and Distribution of Critical Elements

The tin-rich polymetallic epithermal deposit of Poopó, of plausible Late Miocene age, is part of the Bolivian Tin Belt. As an epithermal low sulfidation mineralisation, it represents a typological end-member within the "family" of Bolivian tin deposits. The emplacement of the mineralisatio...

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Autores: Torres, Belén, Melgarejo i Draper, Joan-Carles, Torró i Abat, Lisard, Camprubí, Antoni, Castillo Oliver, Montgarri, Artiaga, David, Campeny, Marc, Tauler i Ferré, Esperança, Jiménez Franco, María Abigail, Alfonso Abella, María Pura, Arce-Burgoa, Osvaldo R.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Institución: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:2445/158977
Acceso en línea:https://hdl.handle.net/2445/158977
Access Level:acceso abierto
Palabra clave:Jaciments minerals
Estany
Bolívia
Mineral deposits
Tin
Bolivia
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spelling The Poopó Polymetallic Epithermal Deposit, Bolivia: Mineralogy, Genetic Constraints, and Distribution of Critical ElementsTorres, BelénMelgarejo i Draper, Joan-CarlesTorró i Abat, LisardCamprubí, AntoniCastillo Oliver, MontgarriArtiaga, DavidCampeny, MarcTauler i Ferré, EsperançaJiménez Franco, María AbigailAlfonso Abella, María PuraArce-Burgoa, Osvaldo R.Jaciments mineralsEstanyBolíviaMineral depositsTinBoliviaThe tin-rich polymetallic epithermal deposit of Poopó, of plausible Late Miocene age, is part of the Bolivian Tin Belt. As an epithermal low sulfidation mineralisation, it represents a typological end-member within the "family" of Bolivian tin deposits. The emplacement of the mineralisation was controlled by the regional fault zone that constitutes the geological border between the Bolivian Altiplano and the Eastern Andes Cordillera. In addition to Sn and Ag, its economic interest resides in its potential in critical elements as In, Ga and Ge. This paper provides the first systematic characterisation of the complex mineralogy and mineral chemistry of the Poopó deposit with the twofold aim of identifying the mineral carriers of critical elements and endeavouring to ascertain plausible metallogenic processes for the formation of this deposit, by means of a multi-methodological approach. The poor development of hydrothermal alteration assemblage, the abundance of sulphosalts and the replacement of löllingite and pyrrhotite by arsenopyrite and pyrite, respectively, indicate that this deposit is ascribed to the low-sulphidation subtype of epithermal deposits, with excursions into higher states of sulphidation. Additionally, the occurrence of pyrophyllite and topaz has been interpreted as the result of discrete pulses of high-sulphidation magmatic fluids. The δ34SVCDT range in sulphides (−5.9 to −2.8 ) is compatible either with: (i) hybrid sulphur sources (i.e., magmatic and sedimentary or metasedimentary); or (ii) a sole magmatic source involving magmas that derived from partial melting of sedimentary rocks or underwent crustal assimilation. In their overall contents in critical elements (In, Ga and Ge), the key minerals in the Poopó deposit, based on their abundance in the deposit and compositions, are rhodostannite, franckeite, cassiterite, stannite and, less importantly, teallite, sphalerite and jamesonite.MDPI2020202020192020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion25 p.application/pdfhttps://hdl.handle.net/2445/158977Articles 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)InglésReproducció del document publicat a: https://doi.org/10.3390/min9080472Minerals, 2019, vol. 9, num. 8, p. 472https://doi.org/10.3390/min9080472cc-by (c) Torres, Belén et al., 2019http://creativecommons.org/licenses/by/3.0/esinfo:eu-repo/semantics/openAccessoai:recercat.cat:2445/1589772026-05-29T05:05:01Z
dc.title.none.fl_str_mv The Poopó Polymetallic Epithermal Deposit, Bolivia: Mineralogy, Genetic Constraints, and Distribution of Critical Elements
title The Poopó Polymetallic Epithermal Deposit, Bolivia: Mineralogy, Genetic Constraints, and Distribution of Critical Elements
spellingShingle The Poopó Polymetallic Epithermal Deposit, Bolivia: Mineralogy, Genetic Constraints, and Distribution of Critical Elements
Torres, Belén
Jaciments minerals
Estany
Bolívia
Mineral deposits
Tin
Bolivia
title_short The Poopó Polymetallic Epithermal Deposit, Bolivia: Mineralogy, Genetic Constraints, and Distribution of Critical Elements
title_full The Poopó Polymetallic Epithermal Deposit, Bolivia: Mineralogy, Genetic Constraints, and Distribution of Critical Elements
title_fullStr The Poopó Polymetallic Epithermal Deposit, Bolivia: Mineralogy, Genetic Constraints, and Distribution of Critical Elements
title_full_unstemmed The Poopó Polymetallic Epithermal Deposit, Bolivia: Mineralogy, Genetic Constraints, and Distribution of Critical Elements
title_sort The Poopó Polymetallic Epithermal Deposit, Bolivia: Mineralogy, Genetic Constraints, and Distribution of Critical Elements
dc.creator.none.fl_str_mv Torres, Belén
Melgarejo i Draper, Joan-Carles
Torró i Abat, Lisard
Camprubí, Antoni
Castillo Oliver, Montgarri
Artiaga, David
Campeny, Marc
Tauler i Ferré, Esperança
Jiménez Franco, María Abigail
Alfonso Abella, María Pura
Arce-Burgoa, Osvaldo R.
author Torres, Belén
author_facet Torres, Belén
Melgarejo i Draper, Joan-Carles
Torró i Abat, Lisard
Camprubí, Antoni
Castillo Oliver, Montgarri
Artiaga, David
Campeny, Marc
Tauler i Ferré, Esperança
Jiménez Franco, María Abigail
Alfonso Abella, María Pura
Arce-Burgoa, Osvaldo R.
author_role author
author2 Melgarejo i Draper, Joan-Carles
Torró i Abat, Lisard
Camprubí, Antoni
Castillo Oliver, Montgarri
Artiaga, David
Campeny, Marc
Tauler i Ferré, Esperança
Jiménez Franco, María Abigail
Alfonso Abella, María Pura
Arce-Burgoa, Osvaldo R.
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Jaciments minerals
Estany
Bolívia
Mineral deposits
Tin
Bolivia
topic Jaciments minerals
Estany
Bolívia
Mineral deposits
Tin
Bolivia
description The tin-rich polymetallic epithermal deposit of Poopó, of plausible Late Miocene age, is part of the Bolivian Tin Belt. As an epithermal low sulfidation mineralisation, it represents a typological end-member within the "family" of Bolivian tin deposits. The emplacement of the mineralisation was controlled by the regional fault zone that constitutes the geological border between the Bolivian Altiplano and the Eastern Andes Cordillera. In addition to Sn and Ag, its economic interest resides in its potential in critical elements as In, Ga and Ge. This paper provides the first systematic characterisation of the complex mineralogy and mineral chemistry of the Poopó deposit with the twofold aim of identifying the mineral carriers of critical elements and endeavouring to ascertain plausible metallogenic processes for the formation of this deposit, by means of a multi-methodological approach. The poor development of hydrothermal alteration assemblage, the abundance of sulphosalts and the replacement of löllingite and pyrrhotite by arsenopyrite and pyrite, respectively, indicate that this deposit is ascribed to the low-sulphidation subtype of epithermal deposits, with excursions into higher states of sulphidation. Additionally, the occurrence of pyrophyllite and topaz has been interpreted as the result of discrete pulses of high-sulphidation magmatic fluids. The δ34SVCDT range in sulphides (−5.9 to −2.8 ) is compatible either with: (i) hybrid sulphur sources (i.e., magmatic and sedimentary or metasedimentary); or (ii) a sole magmatic source involving magmas that derived from partial melting of sedimentary rocks or underwent crustal assimilation. In their overall contents in critical elements (In, Ga and Ge), the key minerals in the Poopó deposit, based on their abundance in the deposit and compositions, are rhodostannite, franckeite, cassiterite, stannite and, less importantly, teallite, sphalerite and jamesonite.
publishDate 2019
dc.date.none.fl_str_mv 2019
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/158977
url https://hdl.handle.net/2445/158977
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.3390/min9080472
Minerals, 2019, vol. 9, num. 8, p. 472
https://doi.org/10.3390/min9080472
dc.rights.none.fl_str_mv cc-by (c) Torres, Belén et al., 2019
http://creativecommons.org/licenses/by/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Torres, Belén et al., 2019
http://creativecommons.org/licenses/by/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 25 p.
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
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 15,81155

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