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dc.contributor.author
Mugas Lobos, Ana Cecilia
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dc.contributor.author
Marquez Zavalia, Maria Florencia
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dc.date.available
2015-12-17T17:50:36Z
dc.date.issued
2013-09
dc.identifier.citation
Mugas Lobos, Ana Cecilia; Marquez Zavalia, Maria Florencia; Fluid Inclusion and stable isotope studies at Don Sixto, a precious metal low sulfidation deposit in Mendoza province, Argentina; Wiley Blackwell Publishing, Inc; Resource Geology; 63; 4; 9-2013; 350-359
dc.identifier.issn
1344-1698
dc.identifier.uri
http://hdl.handle.net/11336/3007
dc.description.abstract
The Don Sixto mining area in Mendoza province, central-western Argentina, contains an epithermal low sulfidation Au-Ag deposit. It is a small deposit (∼4km2), with a gold resource of 36t. In Don Sixto, ore minerals are disseminated in the hydrothermal quartz veins and hydrothermally altered volcanic-pyroclastic rock units of Permian-Triassic age. On the basis of the texture, ore mineral paragenesis and cross cutting relationship of gangue minerals, seven stages of mineralization were recognized and described. The first six stages are characterized by quartz veins with minor amounts of base metal minerals and the last stage is represented by fluorite veins with minimal quantities of base metal minerals; the precious metal mineralization is mainly related to the fourth stage. The hydrothermal veins exhibit mainly massive, crustiform and comb infilling textures; the presence of bladed quartz replacement textures and quartz veins with adularia crystals are indicative of boiling processes in the system. Fluid inclusion and complementary stable isotope studies were performed in quartz, fluorite, and pyrite samples from the vein systems. The microthermometric data were obtained from primary, biphasic (liquid-vapor) fluid inclusion assemblages in quartz and fluorite. The maximum values for salinity and homogenization temperature (Th) came from the stage IV where quartz with petrographic evidence of boiling has average values of 4.96 wt% NaClequiv. and 286.9°C respectively. The lower values are related to the last stage of mineralization, where the fluid inclusions in fluorite have average salinities of 1.05 wt% NaClequiv. and average homogenization temperatures of 173.1°C. The oxygen and sulfur isotopic fractionation was analyzed in quartz and pyrite. The calculated isotopic fractionation for oxygen in the hydrothermal fluid is in the range of δ18OH2O = -6.92up to -3.08‰, which indicates dominance of a meteoric source for the water, while sulfur reaches δ34SH2S = 1.09‰, which could be reflecting a possible magmatic, or even a mixed source.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Bladed Quartz
dc.subject
Epithermal
dc.subject
Fluis Inclusions
dc.subject
Low Sulfidation
dc.subject
Precius Metals
dc.subject
Stable Isotopes
dc.subject.classification
Mineralogía
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Fluid Inclusion and stable isotope studies at Don Sixto, a precious metal low sulfidation deposit in Mendoza province, Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
63
dc.journal.number
4
dc.journal.pagination
350-359
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Mugas Lobos, Ana Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.description.fil
Fil: Marquez Zavalia, Maria Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.journal.title
Resource Geology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1111/rge.12014
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/rge.12014
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