
handle: 11336/202559
Preliminary study of chemical composition and fluid inclusions in hydrothermal fluorites from Ancasti range, Catamarca, Argentina. In this paper, a preliminary study about the petrography and thermometric data of fluid inclusions and REE-composition from hydrothermal fluorite veins from northwestern region of the Ancasti range, Catamarca province (Argentina) is presented. The fluorite of the veins is accompanied by quartz and chalcedony. The veins are hosted by Upper Devonian-Lower Carboniferous granitoids. The fluid inclusions study was carried out in granular purple fluorite while the REE-composition was obtained in five fluorite-samples of three different veins. The fluid inclusions are variable in size and shape. They are predominantly biphasic (liquid and gas phases) and the average homogenization temperature is 126ºC. The REE geochemistry shows a total content that varies from 6.70 to 64.33 ppm (average 25.51 ppm). The LREE/HREE relationship is generally greater than 1 and Eu/Eu* ratio varies between 0.66 and 0.81. The diagram Tb/Ca vs Tb/La in accordance with geological setting and textural-mineralogical features indicate a hydrothermal origin for these deposits. Additionally, these textures show more than one mineralizing pulse and low formation temperaturas.
Fil: Montenegro, Teresita Francis. 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: Sardi, Fernando Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Iriarte, Matías Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
XIII Congreso de Mineralogía, Petrología Ígnea y Metamórfica, y Metalogénesis y IV Simposios de Petrología Ígnea, Metamorfismo y Metalogénesis Asociada
Fil: Altenberger, Uwe. Universita Zu Berlin. Universita Postdam; Alemania
Asociación Mineralógica Argentina
Asociación Geológica Argentina
Argentina
Córdoba
https://purl.org/becyt/ford/1.5, FLUORITA, ELEMENTOS DE TIERRAS RARAS (ETR), EPITERMAL, SIERRA DE ANCASTI, INCLUSIONES FLUIDAS, https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.5, FLUORITA, ELEMENTOS DE TIERRAS RARAS (ETR), EPITERMAL, SIERRA DE ANCASTI, INCLUSIONES FLUIDAS, https://purl.org/becyt/ford/1
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