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Article . 2012
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Análisis de inclusiones fluidas en las vetas polimetálicas del pórfiro de cu-(mo) San Pedro, Mendoza

Authors: Korseniewski, Lidia Ines; Rubinstein, Nora Alicia; Gómez, Anabel;

Análisis de inclusiones fluidas en las vetas polimetálicas del pórfiro de cu-(mo) San Pedro, Mendoza

Abstract

El pórfiro de Cu-(Mo) San Pedro, localizado en el cerro homónimo, se ubica en el sector sur del bloque de San Rafael, provincia de Mendoza. Comprende una zona de alteración, con mineralización diseminada, desarrollada en rocas volcánicas pertenecientes al Ciclo Magmático Choiyoi. En sus proximidades, aflora un conjunto de vetas polimetálicas las cuales, en base a relaciones estratigráficas, han sido genéticamente relacionadas con el pórfiro. Estudios petrográficos y microtermométricos de inclusiones fluidas llevados a cabo en muestras de las vetas permiten confirmar dicha vinculación genética y establecer la existencia de dos etapas en la evolución del sistema hidrotermal. En la primera etapa participan fluidos magmáticos de elevada salinidad (37,5-41 % en peso equivalente NaCl) y temperatura (356-389ºC) que dan origen a la alteración potásica y a la mineralizaciónd e Cu y en la segunda etapa participan fluidos magmáticos de bajas temperaturas (176-276ºC) y salinidades (0,35-8,68 % en peso equivalente NaCl) los cuales dan lugar a la alteración fílica.

The San Pedro porphyry copper deposit, located in the southern part of the San Rafael, Massif, Mendoza province, Argentina, develops an alteration halo in volcanic rocks of the Choiyoi Magmatic Cycle. Close to this alteration halo a group of polymetallic veins that were genetically linked to the disseminated deposit based on stratigraphic data crops out. Fluid inclusions petrographic and microthermometric studies carried on in samples from these veins confirm this genetic link and allow establishing two stages in the evolution of this hydrothermal system. The first stage with high salinity (37.5-41%) and temperature (356-389ºC) magmatic fluids produce potassic alteration and Cu mineralization. During the second stage diluted magmatic fluids with low temperatures (176-276ºC) and salinities (0.35-8.68%) led to phyllic alteration.

Fil: Rubinstein, Nora Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina

Fil: Gómez, Anabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina

Fil: Korseniewski, Lidia Ines. Secretaría de Industria y Minería. Servicio Geológico Minero Argentino; Argentina

Country
Argentina
Keywords

vetas polimetálicas, condiciones de los fluidos mineralizantes, pórfiro de Cu-(Mo) San Pedro, bloque de San Rafael, https://purl.org/becyt/ford/1.5, Inclusiones fluidas, https://purl.org/becyt/ford/1

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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