INVESTIGADORES
GOMEZ Anabel Lina Rosina
congresos y reuniones científicas
Título:
Estudio preliminar de inclusiones fluidas del pórfiro de Infiernillo, Mendoza, Argentina
Autor/es:
KORSENIEWSKI LIDIA INES; GÓMEZ ANABEL; RUBINSTEIN NORA
Lugar:
San Salvador de Jujuy
Reunión:
Congreso; 9° Congreso de Mineralogía y Metalogenia (MinMet); 2008
Institución organizadora:
Asociación Mineralógica Argentina
Resumen:
El Infiernillo porphyry Cu - Mo deposit, located in the San Rafael Massiff, Mendoza, is hosted by Permian ignimbrites of the Cochicó Group. The alteration halo consists of a small central quartz neck surrounded by pervasive potassic alteration. Outwards there is a well-developed phyllic halo which consists of silicification, sericitization and pyritization. In the outer part of the alteration zone, small polymetallic veins crop out. Fluid inclusions studies carried out in samples from the neck, the potassic zone and polymetallic veins reveal the presence of high homogenization T and high salinity inclusions (type I, II and III) associated with early potassic alteration. Besides, low homogenization T and low salinity inclusions (type IV and V) were recognized in the veins and also in the the quartz neck and the potassic zone, suggesting a magmatic plume collapse and a meteoric water influx in the hydrothermal system after the potassic stage.
