Trace metals in pyrite and marcasite from the Agua Rica porphyry-high sulfidation epithermal deposit, Catamarca, Argentina: Textural features and metal zoning at the porphyry to ep...

Autores: Franchini, Marta Beatriz; McFarlane, Christopher; Maydagán, Laura; Reich, Martin; Lentz, David R.; Meinert, Lawrence; Bouhier, Verónica Emilia
Año de publicación: 2015
Idioma: inglés
Tipo de recurso: artículo
Estado: versión publicada
Descripción: Agua Rica is a world-class Cu (Mo-Au) deposit located in Catamarca, Argentina, in which the porphyry and high sulfidation epithermal stages are juxtaposed due to the telescoping of the mineralizing system. Pyrite is the most abundant sulfide in the analyzed section of the deposit and shows variations in textures and trace metal content (determined by LA-ICPMS), between the porphyry and epithermal stages. Pyrite from the porphyry stage is fine grained and depleted in most trace elements analyzed, except for traces of Co (up to 276. ppm) and Ni (up to 131. ppm). Pyrite from the epithermal stage is texturally complex, compositionally heterogeneous, and the trace metal content varies with depth and within sub-stages of mineralization. At an intermediate depth (2625. m), epithermal pyrite from the cement of the jig-saw and clast-supported hydrothermal breccias are enriched in Cu (up to 2961. ppm) that correlates with the highest Cu grades in the section. This pyrite contains micro-inclusions of sulfosalt minerals as inferred by LA-ICPMS elemental mapping and individual spot ablation profiles. They are zoned and show a Co-rich core, an intermediate zone enriched in Cu, and an outer rim rich in Zn. At shallower levels (3000. m), epithermal pyrite cements in the heterolithic hydrothermal breccia are unusually rich in trace metals that correlate with the highest Pb, Zn, Au, and Ag grades. The ore-stage pyrite occurs as either successive colloform bands on earlier Co-bearing cores or as veinlets infill. The colloform pyrite bands and veinlets are As-poor (<. 30. ppm) and enriched in Pb (up to 4528. ppm), Cu (up to 3900. ppm), Zn (up to 1078. ppm), Ag (up to 136. ppm), Au (up to 6.7. ppm), Bi (up to 1077. ppm), and Te (up to 3.1. ppm). In LA-ICPMS elemental maps, arsenic concentrates in a thin inner band within the thicker, trace element-rich rims. The colloform banding in pyrite is interpreted to reflect rapid crystallization during fluid boiling at a hydrothermal fluid-meteoric water interface, creating intense fluctuations in temperature and producing undercooling in the mixed fluid. This late and shallow fluid was depleted in As and Cu and also precipitated alunite, Fe-poor sphalerite, and marcasite enriched in trace metals. Maximum Au and Ag inputs into the system occurred towards the end of the epithermal cycle and are expressed by the Au-Ag-rich rims in hydrothermal pyrite. Based on Au-As data in pyrite, ore fluids forming early pyrite were undersaturated with respect to native Au (solid solution incorporation), while later fluids precipitating colloform pyrite were supersaturated with respect to native Au forming Au nanoparticles. This study provides evidence that pyrite records chemical changes at the porphyry to epithermal transition that can be used to monitor hydrothermal fluid evolution, constrain different mineralization stages, and vector towards undiscovered ore zones.
Fil: Franchini, Marta Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Geología y Petróleo; Argentina
Fil: McFarlane, Christopher. University of New Brunswick; Canadá
Fil: Maydagán, Laura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Geología y Petróleo; Argentina. Universidad Nacional del Sur. Departamento de Geología; Argentina
Fil: Reich, Martin. Universidad de Chile; Chile
Fil: Lentz, David R.. University of New Brunswick; Canadá
Fil: Meinert, Lawrence. U.S. Geological Survey; Estados Unidos
Fil: Bouhier, Verónica Emilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Geología y Petróleo; Argentina. Universidad Nacional del Sur. Departamento de Geología; Argentina
Materia: High Sulfidation Epithermal
Porphyry Cu
Pyrite-Marcasite
Trace Elements
Nivel de accesibilidad: acceso abierto
Condiciones de uso: https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
Institución: Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador: oai:ri.conicet.gov.ar:11336/39255

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network_name_str	CONICET Digital (CONICET)
spelling	Trace metals in pyrite and marcasite from the Agua Rica porphyry-high sulfidation epithermal deposit, Catamarca, Argentina: Textural features and metal zoning at the porphyry to epithermal transitionFranchini, Marta BeatrizMcFarlane, ChristopherMaydagán, LauraReich, MartinLentz, David R.Meinert, LawrenceBouhier, Verónica EmiliaHigh Sulfidation EpithermalPorphyry CuPyrite-MarcasiteTrace Elementshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Agua Rica is a world-class Cu (Mo-Au) deposit located in Catamarca, Argentina, in which the porphyry and high sulfidation epithermal stages are juxtaposed due to the telescoping of the mineralizing system. Pyrite is the most abundant sulfide in the analyzed section of the deposit and shows variations in textures and trace metal content (determined by LA-ICPMS), between the porphyry and epithermal stages. Pyrite from the porphyry stage is fine grained and depleted in most trace elements analyzed, except for traces of Co (up to 276. ppm) and Ni (up to 131. ppm). Pyrite from the epithermal stage is texturally complex, compositionally heterogeneous, and the trace metal content varies with depth and within sub-stages of mineralization. At an intermediate depth (2625. m), epithermal pyrite from the cement of the jig-saw and clast-supported hydrothermal breccias are enriched in Cu (up to 2961. ppm) that correlates with the highest Cu grades in the section. This pyrite contains micro-inclusions of sulfosalt minerals as inferred by LA-ICPMS elemental mapping and individual spot ablation profiles. They are zoned and show a Co-rich core, an intermediate zone enriched in Cu, and an outer rim rich in Zn. At shallower levels (3000. m), epithermal pyrite cements in the heterolithic hydrothermal breccia are unusually rich in trace metals that correlate with the highest Pb, Zn, Au, and Ag grades. The ore-stage pyrite occurs as either successive colloform bands on earlier Co-bearing cores or as veinlets infill. The colloform pyrite bands and veinlets are As-poor (<. 30. ppm) and enriched in Pb (up to 4528. ppm), Cu (up to 3900. ppm), Zn (up to 1078. ppm), Ag (up to 136. ppm), Au (up to 6.7. ppm), Bi (up to 1077. ppm), and Te (up to 3.1. ppm). In LA-ICPMS elemental maps, arsenic concentrates in a thin inner band within the thicker, trace element-rich rims. The colloform banding in pyrite is interpreted to reflect rapid crystallization during fluid boiling at a hydrothermal fluid-meteoric water interface, creating intense fluctuations in temperature and producing undercooling in the mixed fluid. This late and shallow fluid was depleted in As and Cu and also precipitated alunite, Fe-poor sphalerite, and marcasite enriched in trace metals. Maximum Au and Ag inputs into the system occurred towards the end of the epithermal cycle and are expressed by the Au-Ag-rich rims in hydrothermal pyrite. Based on Au-As data in pyrite, ore fluids forming early pyrite were undersaturated with respect to native Au (solid solution incorporation), while later fluids precipitating colloform pyrite were supersaturated with respect to native Au forming Au nanoparticles. This study provides evidence that pyrite records chemical changes at the porphyry to epithermal transition that can be used to monitor hydrothermal fluid evolution, constrain different mineralization stages, and vector towards undiscovered ore zones.Fil: Franchini, Marta Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Geología y Petróleo; ArgentinaFil: McFarlane, Christopher. University of New Brunswick; CanadáFil: Maydagán, Laura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Geología y Petróleo; Argentina. Universidad Nacional del Sur. Departamento de Geología; ArgentinaFil: Reich, Martin. Universidad de Chile; ChileFil: Lentz, David R.. University of New Brunswick; CanadáFil: Meinert, Lawrence. U.S. Geological Survey; Estados UnidosFil: Bouhier, Verónica Emilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Geología y Petróleo; Argentina. Universidad Nacional del Sur. Departamento de Geología; ArgentinaElsevier Science2015-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/39255Franchini, Marta Beatriz; McFarlane, Christopher; Maydagán, Laura; Reich, Martin; Lentz, David R.; et al.; Trace metals in pyrite and marcasite from the Agua Rica porphyry-high sulfidation epithermal deposit, Catamarca, Argentina: Textural features and metal zoning at the porphyry to epithermal transition; Elsevier Science; Ore Geology Reviews; 66; 4-2015; 366-3870169-1368CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.oregeorev.2014.10.022info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S016913681400273Xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:01:48Zoai:ri.conicet.gov.ar:11336/39255instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:01:48.886CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv	Trace metals in pyrite and marcasite from the Agua Rica porphyry-high sulfidation epithermal deposit, Catamarca, Argentina: Textural features and metal zoning at the porphyry to epithermal transition
title	Trace metals in pyrite and marcasite from the Agua Rica porphyry-high sulfidation epithermal deposit, Catamarca, Argentina: Textural features and metal zoning at the porphyry to epithermal transition
spellingShingle	Trace metals in pyrite and marcasite from the Agua Rica porphyry-high sulfidation epithermal deposit, Catamarca, Argentina: Textural features and metal zoning at the porphyry to epithermal transition Franchini, Marta Beatriz High Sulfidation Epithermal Porphyry Cu Pyrite-Marcasite Trace Elements
title_short	Trace metals in pyrite and marcasite from the Agua Rica porphyry-high sulfidation epithermal deposit, Catamarca, Argentina: Textural features and metal zoning at the porphyry to epithermal transition
title_full	Trace metals in pyrite and marcasite from the Agua Rica porphyry-high sulfidation epithermal deposit, Catamarca, Argentina: Textural features and metal zoning at the porphyry to epithermal transition
title_fullStr	Trace metals in pyrite and marcasite from the Agua Rica porphyry-high sulfidation epithermal deposit, Catamarca, Argentina: Textural features and metal zoning at the porphyry to epithermal transition
title_full_unstemmed	Trace metals in pyrite and marcasite from the Agua Rica porphyry-high sulfidation epithermal deposit, Catamarca, Argentina: Textural features and metal zoning at the porphyry to epithermal transition
title_sort	Trace metals in pyrite and marcasite from the Agua Rica porphyry-high sulfidation epithermal deposit, Catamarca, Argentina: Textural features and metal zoning at the porphyry to epithermal transition
dc.creator.none.fl_str_mv	Franchini, Marta Beatriz McFarlane, Christopher Maydagán, Laura Reich, Martin Lentz, David R. Meinert, Lawrence Bouhier, Verónica Emilia
author	Franchini, Marta Beatriz
author_facet	Franchini, Marta Beatriz McFarlane, Christopher Maydagán, Laura Reich, Martin Lentz, David R. Meinert, Lawrence Bouhier, Verónica Emilia
author_role	author
author2	McFarlane, Christopher Maydagán, Laura Reich, Martin Lentz, David R. Meinert, Lawrence Bouhier, Verónica Emilia
author2_role	author author author author author author
dc.subject.none.fl_str_mv	High Sulfidation Epithermal Porphyry Cu Pyrite-Marcasite Trace Elements
topic	High Sulfidation Epithermal Porphyry Cu Pyrite-Marcasite Trace Elements
purl_subject.fl_str_mv	https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv	Agua Rica is a world-class Cu (Mo-Au) deposit located in Catamarca, Argentina, in which the porphyry and high sulfidation epithermal stages are juxtaposed due to the telescoping of the mineralizing system. Pyrite is the most abundant sulfide in the analyzed section of the deposit and shows variations in textures and trace metal content (determined by LA-ICPMS), between the porphyry and epithermal stages. Pyrite from the porphyry stage is fine grained and depleted in most trace elements analyzed, except for traces of Co (up to 276. ppm) and Ni (up to 131. ppm). Pyrite from the epithermal stage is texturally complex, compositionally heterogeneous, and the trace metal content varies with depth and within sub-stages of mineralization. At an intermediate depth (2625. m), epithermal pyrite from the cement of the jig-saw and clast-supported hydrothermal breccias are enriched in Cu (up to 2961. ppm) that correlates with the highest Cu grades in the section. This pyrite contains micro-inclusions of sulfosalt minerals as inferred by LA-ICPMS elemental mapping and individual spot ablation profiles. They are zoned and show a Co-rich core, an intermediate zone enriched in Cu, and an outer rim rich in Zn. At shallower levels (3000. m), epithermal pyrite cements in the heterolithic hydrothermal breccia are unusually rich in trace metals that correlate with the highest Pb, Zn, Au, and Ag grades. The ore-stage pyrite occurs as either successive colloform bands on earlier Co-bearing cores or as veinlets infill. The colloform pyrite bands and veinlets are As-poor (<. 30. ppm) and enriched in Pb (up to 4528. ppm), Cu (up to 3900. ppm), Zn (up to 1078. ppm), Ag (up to 136. ppm), Au (up to 6.7. ppm), Bi (up to 1077. ppm), and Te (up to 3.1. ppm). In LA-ICPMS elemental maps, arsenic concentrates in a thin inner band within the thicker, trace element-rich rims. The colloform banding in pyrite is interpreted to reflect rapid crystallization during fluid boiling at a hydrothermal fluid-meteoric water interface, creating intense fluctuations in temperature and producing undercooling in the mixed fluid. This late and shallow fluid was depleted in As and Cu and also precipitated alunite, Fe-poor sphalerite, and marcasite enriched in trace metals. Maximum Au and Ag inputs into the system occurred towards the end of the epithermal cycle and are expressed by the Au-Ag-rich rims in hydrothermal pyrite. Based on Au-As data in pyrite, ore fluids forming early pyrite were undersaturated with respect to native Au (solid solution incorporation), while later fluids precipitating colloform pyrite were supersaturated with respect to native Au forming Au nanoparticles. This study provides evidence that pyrite records chemical changes at the porphyry to epithermal transition that can be used to monitor hydrothermal fluid evolution, constrain different mineralization stages, and vector towards undiscovered ore zones. Fil: Franchini, Marta Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Geología y Petróleo; Argentina Fil: McFarlane, Christopher. University of New Brunswick; Canadá Fil: Maydagán, Laura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Geología y Petróleo; Argentina. Universidad Nacional del Sur. Departamento de Geología; Argentina Fil: Reich, Martin. Universidad de Chile; Chile Fil: Lentz, David R.. University of New Brunswick; Canadá Fil: Meinert, Lawrence. U.S. Geological Survey; Estados Unidos Fil: Bouhier, Verónica Emilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Geología y Petróleo; Argentina. Universidad Nacional del Sur. Departamento de Geología; Argentina
description	Agua Rica is a world-class Cu (Mo-Au) deposit located in Catamarca, Argentina, in which the porphyry and high sulfidation epithermal stages are juxtaposed due to the telescoping of the mineralizing system. Pyrite is the most abundant sulfide in the analyzed section of the deposit and shows variations in textures and trace metal content (determined by LA-ICPMS), between the porphyry and epithermal stages. Pyrite from the porphyry stage is fine grained and depleted in most trace elements analyzed, except for traces of Co (up to 276. ppm) and Ni (up to 131. ppm). Pyrite from the epithermal stage is texturally complex, compositionally heterogeneous, and the trace metal content varies with depth and within sub-stages of mineralization. At an intermediate depth (2625. m), epithermal pyrite from the cement of the jig-saw and clast-supported hydrothermal breccias are enriched in Cu (up to 2961. ppm) that correlates with the highest Cu grades in the section. This pyrite contains micro-inclusions of sulfosalt minerals as inferred by LA-ICPMS elemental mapping and individual spot ablation profiles. They are zoned and show a Co-rich core, an intermediate zone enriched in Cu, and an outer rim rich in Zn. At shallower levels (3000. m), epithermal pyrite cements in the heterolithic hydrothermal breccia are unusually rich in trace metals that correlate with the highest Pb, Zn, Au, and Ag grades. The ore-stage pyrite occurs as either successive colloform bands on earlier Co-bearing cores or as veinlets infill. The colloform pyrite bands and veinlets are As-poor (<. 30. ppm) and enriched in Pb (up to 4528. ppm), Cu (up to 3900. ppm), Zn (up to 1078. ppm), Ag (up to 136. ppm), Au (up to 6.7. ppm), Bi (up to 1077. ppm), and Te (up to 3.1. ppm). In LA-ICPMS elemental maps, arsenic concentrates in a thin inner band within the thicker, trace element-rich rims. The colloform banding in pyrite is interpreted to reflect rapid crystallization during fluid boiling at a hydrothermal fluid-meteoric water interface, creating intense fluctuations in temperature and producing undercooling in the mixed fluid. This late and shallow fluid was depleted in As and Cu and also precipitated alunite, Fe-poor sphalerite, and marcasite enriched in trace metals. Maximum Au and Ag inputs into the system occurred towards the end of the epithermal cycle and are expressed by the Au-Ag-rich rims in hydrothermal pyrite. Based on Au-As data in pyrite, ore fluids forming early pyrite were undersaturated with respect to native Au (solid solution incorporation), while later fluids precipitating colloform pyrite were supersaturated with respect to native Au forming Au nanoparticles. This study provides evidence that pyrite records chemical changes at the porphyry to epithermal transition that can be used to monitor hydrothermal fluid evolution, constrain different mineralization stages, and vector towards undiscovered ore zones.
publishDate	2015
dc.date.none.fl_str_mv	2015-04
dc.type.none.fl_str_mv	info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo
format	article
status_str	publishedVersion
dc.identifier.none.fl_str_mv	http://hdl.handle.net/11336/39255 Franchini, Marta Beatriz; McFarlane, Christopher; Maydagán, Laura; Reich, Martin; Lentz, David R.; et al.; Trace metals in pyrite and marcasite from the Agua Rica porphyry-high sulfidation epithermal deposit, Catamarca, Argentina: Textural features and metal zoning at the porphyry to epithermal transition; Elsevier Science; Ore Geology Reviews; 66; 4-2015; 366-387 0169-1368 CONICET Digital CONICET
url	http://hdl.handle.net/11336/39255
identifier_str_mv	Franchini, Marta Beatriz; McFarlane, Christopher; Maydagán, Laura; Reich, Martin; Lentz, David R.; et al.; Trace metals in pyrite and marcasite from the Agua Rica porphyry-high sulfidation epithermal deposit, Catamarca, Argentina: Textural features and metal zoning at the porphyry to epithermal transition; Elsevier Science; Ore Geology Reviews; 66; 4-2015; 366-387 0169-1368 CONICET Digital CONICET
dc.language.none.fl_str_mv	eng
language	eng
dc.relation.none.fl_str_mv	info:eu-repo/semantics/altIdentifier/doi/10.1016/j.oregeorev.2014.10.022 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S016913681400273X
dc.rights.none.fl_str_mv	info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv	openAccess
rights_invalid_str_mv	https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv	application/pdf application/pdf application/pdf application/pdf
dc.publisher.none.fl_str_mv	Elsevier Science
publisher.none.fl_str_mv	Elsevier Science
dc.source.none.fl_str_mv	reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str	CONICET Digital (CONICET)
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instname_str	Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv	CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv	dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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Trace metals in pyrite and marcasite from the Agua Rica porphyry-high sulfidation epithermal deposit, Catamarca, Argentina: Textural features and metal zoning at the porphyry to ep...

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