Mineralogy and Distribution of Critical Elements in 1 the Sn-W-Pb-Ag-Zn Huanuni Deposit, Bolivia

The polymetallic Huanuni deposit, a world-class tin deposit, is part of the Bolivian tin belt. As a likely case for a "mesothermal" or transitional deposit between epithermal and porphyry Sn types (or shallow porphyry Sn), it represents a case that contributes significantly to the systemat...

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Autores: Cacho, Andreu, Melgarejo i Draper, Joan-Carles, Camprubí, Antoni, Torró i Abat, Lisard, Castillo Oliver, Montgarri, Torres, Belén, Artiaga, David, Tauler i Ferré, Esperança, Martínez, Álvaro, Campeny, Marc, Alfonso Abella, María Pura, Arce-Burgoa, Osvaldo R.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/157378
Acceso en línea:https://hdl.handle.net/2445/157378
Access Level:acceso abierto
Palabra clave:Estany
Jaciments hidrotermals
Bolívia
Tin
Hydrothermal deposits
Bolivia
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spelling Mineralogy and Distribution of Critical Elements in 1 the Sn-W-Pb-Ag-Zn Huanuni Deposit, BoliviaCacho, AndreuMelgarejo i Draper, Joan-CarlesCamprubí, AntoniTorró i Abat, LisardCastillo Oliver, MontgarriTorres, BelénArtiaga, DavidTauler i Ferré, EsperançaMartínez, ÁlvaroCampeny, MarcAlfonso Abella, María PuraArce-Burgoa, Osvaldo R.EstanyJaciments hidrotermalsBolíviaTinHydrothermal depositsBoliviaThe polymetallic Huanuni deposit, a world-class tin deposit, is part of the Bolivian tin belt. As a likely case for a "mesothermal" or transitional deposit between epithermal and porphyry Sn types (or shallow porphyry Sn), it represents a case that contributes significantly to the systematic study of the distribution of critical elements within the "family" of Bolivian tin deposits. In addition to Sn, Zn and Ag, further economic interest in the area resides in its potential in critical elements such as In, Ga and Ge. This paper provides the first systematic characterisation of the complex mineralogy and mineral chemistry of the Huanuni deposit with the twofold aim of identifying the mineral carriers of critical elements and endeavouring plausible metallogenic processes for the formation of this deposit, by means of a multi-methodological approach. With In concentrations consistently over 2000 ppm, the highest potential for relevant concentrations in this metal resides in widespread tin minerals (cassiterite and stannite) and sphalerite. Hypogene alteration assemblages are hardly developed due to the metasedimentary nature of host rocks, but the occurrence of potassium feldspar, schorl, pyrophyllite and dickite as vein material stand for potassic to phyllic or advanced argillic alteration assemblages and relatively high-temperature (and low pH) mineralising fluids. District-scale mineralogical zonation suggests a thermal zonation with decreasing temperatures from the central to the peripheral areas. A district-scale zonation has been also determined for δ34SVCDT values, which range −7.2 to 0.2 (mostly −7 to −5 ) in the central area and −4.2 to 1.0 (mainly constrained between −2 and 1 ) in peripheral areas. Such values stand for magmatic and metasedimentary sources for sulfur, and their spatial zoning may be related to differential reactivity between mineralising fluids and host rocks, outwardly decreasing from the central to the peripheral areas.MDPI2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/157378Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.3390/min9120753Minerals, 2019, vol. 9, num. 12, p. 753https://doi.org/10.3390/min9120753cc-by (c) Cacho, Andreu et al., 2019http://creativecommons.org/licenses/by/3.0/esinfo:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1573782026-05-27T06:46:51Z
dc.title.none.fl_str_mv Mineralogy and Distribution of Critical Elements in 1 the Sn-W-Pb-Ag-Zn Huanuni Deposit, Bolivia
title Mineralogy and Distribution of Critical Elements in 1 the Sn-W-Pb-Ag-Zn Huanuni Deposit, Bolivia
spellingShingle Mineralogy and Distribution of Critical Elements in 1 the Sn-W-Pb-Ag-Zn Huanuni Deposit, Bolivia
Cacho, Andreu
Estany
Jaciments hidrotermals
Bolívia
Tin
Hydrothermal deposits
Bolivia
title_short Mineralogy and Distribution of Critical Elements in 1 the Sn-W-Pb-Ag-Zn Huanuni Deposit, Bolivia
title_full Mineralogy and Distribution of Critical Elements in 1 the Sn-W-Pb-Ag-Zn Huanuni Deposit, Bolivia
title_fullStr Mineralogy and Distribution of Critical Elements in 1 the Sn-W-Pb-Ag-Zn Huanuni Deposit, Bolivia
title_full_unstemmed Mineralogy and Distribution of Critical Elements in 1 the Sn-W-Pb-Ag-Zn Huanuni Deposit, Bolivia
title_sort Mineralogy and Distribution of Critical Elements in 1 the Sn-W-Pb-Ag-Zn Huanuni Deposit, Bolivia
dc.creator.none.fl_str_mv Cacho, Andreu
Melgarejo i Draper, Joan-Carles
Camprubí, Antoni
Torró i Abat, Lisard
Castillo Oliver, Montgarri
Torres, Belén
Artiaga, David
Tauler i Ferré, Esperança
Martínez, Álvaro
Campeny, Marc
Alfonso Abella, María Pura
Arce-Burgoa, Osvaldo R.
author Cacho, Andreu
author_facet Cacho, Andreu
Melgarejo i Draper, Joan-Carles
Camprubí, Antoni
Torró i Abat, Lisard
Castillo Oliver, Montgarri
Torres, Belén
Artiaga, David
Tauler i Ferré, Esperança
Martínez, Álvaro
Campeny, Marc
Alfonso Abella, María Pura
Arce-Burgoa, Osvaldo R.
author_role author
author2 Melgarejo i Draper, Joan-Carles
Camprubí, Antoni
Torró i Abat, Lisard
Castillo Oliver, Montgarri
Torres, Belén
Artiaga, David
Tauler i Ferré, Esperança
Martínez, Álvaro
Campeny, Marc
Alfonso Abella, María Pura
Arce-Burgoa, Osvaldo R.
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Estany
Jaciments hidrotermals
Bolívia
Tin
Hydrothermal deposits
Bolivia
topic Estany
Jaciments hidrotermals
Bolívia
Tin
Hydrothermal deposits
Bolivia
description The polymetallic Huanuni deposit, a world-class tin deposit, is part of the Bolivian tin belt. As a likely case for a "mesothermal" or transitional deposit between epithermal and porphyry Sn types (or shallow porphyry Sn), it represents a case that contributes significantly to the systematic study of the distribution of critical elements within the "family" of Bolivian tin deposits. In addition to Sn, Zn and Ag, further economic interest in the area resides in its potential in critical elements such as In, Ga and Ge. This paper provides the first systematic characterisation of the complex mineralogy and mineral chemistry of the Huanuni deposit with the twofold aim of identifying the mineral carriers of critical elements and endeavouring plausible metallogenic processes for the formation of this deposit, by means of a multi-methodological approach. With In concentrations consistently over 2000 ppm, the highest potential for relevant concentrations in this metal resides in widespread tin minerals (cassiterite and stannite) and sphalerite. Hypogene alteration assemblages are hardly developed due to the metasedimentary nature of host rocks, but the occurrence of potassium feldspar, schorl, pyrophyllite and dickite as vein material stand for potassic to phyllic or advanced argillic alteration assemblages and relatively high-temperature (and low pH) mineralising fluids. District-scale mineralogical zonation suggests a thermal zonation with decreasing temperatures from the central to the peripheral areas. A district-scale zonation has been also determined for δ34SVCDT values, which range −7.2 to 0.2 (mostly −7 to −5 ) in the central area and −4.2 to 1.0 (mainly constrained between −2 and 1 ) in peripheral areas. Such values stand for magmatic and metasedimentary sources for sulfur, and their spatial zoning may be related to differential reactivity between mineralising fluids and host rocks, outwardly decreasing from the central to the peripheral areas.
publishDate 2019
dc.date.none.fl_str_mv 2019
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/2445/157378
url https://hdl.handle.net/2445/157378
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/min9120753
Minerals, 2019, vol. 9, num. 12, p. 753
https://doi.org/10.3390/min9120753
dc.rights.none.fl_str_mv cc-by (c) Cacho, Andreu et al., 2019
http://creativecommons.org/licenses/by/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Cacho, Andreu et al., 2019
http://creativecommons.org/licenses/by/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 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:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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