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Characterization of agua de Ramon marbles, Cordoba Province, Argentina; Caracterizacion de los marmoles de agua de Ramon Provincia de Cordoba, Argentina

Abstract

Agua de Ramon district is located in the NW of Cordoba, Argentina, between 3 49' and 30{sup 0}52' S and 65{sup 0}21' and 65{sup 0}24' W, in the Eastern Pampean Range setting. It was a very important tungsten district until the end of 1950'decade when tungsten mining became of no economic interest. The objective is to report for the first time the petrological, mineralogical and geochemical characteristics of several marble lenses located in the sourthern of the area. Marble outcrops are lenticular ranging from 1 m to 80 m in length and 0.50 m to 20 m width. They appear massive, fine-grained and in light colors (white, pale green, very light brown and pale gray). These last varieties show a distinct banded structure due to little differences in color. These marbles are mainly composed of magnesian calcite accompanied by minor amounts of dolomite, forsterite, humite group minerals, tremolite, talc, serpentine and clinochlore, and scheelite, sphene, apatite and opaque minerals like hematite, magnetite, illmenite, pirrothite and pyrite as accessory minerals. Major chemical analyses indicate a relatively high SiO2 and MgO content, and minor CaO, in comparison with marbles of this type. Mineral paragenesis was useful to evaluate metamorphism conditions in this  More>>
Authors:
Tourn, S; Castro, L. . E mail: selvia@fcen.uba.ar, lilianacastro@fibertel.com.ar [1] 
  1. Departamento de Ciencias Geologicas, Facultad de Ciencias Exactas y Naturales, Universidad de buenos Aires, (Argentina)
Publication Date:
Sep 01, 2004
Product Type:
Conference
Resource Relation:
Conference: 4. Uruguayan geological Congress II meeting about environmental geology and territorial ordinance, Cuarto Congreso Uruguayo de Geologia II Reunion de Geologia Ambiental y ordenamiento Territorial del Mercosur, Montevideo (Uruguay), 8-10 Sep 2004; Related Information: In: Works presented, [1 CD] pages.
Subject:
58 GEOSCIENCES; DOLOMITE; GEOCHEMISTRY; GEOLOGIC STRUCTURES; GEOLOGY; HEMATITE; ILMENITE; MAGNETITE; MARBLE; METAMORPHISM; MINERALOGY; MINERALS; PETROGRAPHY; SERPENTINE; TALC
Sponsoring Organizations:
Dinamige (Uruguay); Asociacion de Licenciados en Geologia (Uruguay); Unesco(Uruguay); Ministerio de Ordenamiento Territorial y Medioambiente(Uruguay); ANCAP (Uruguay); Facultad de Ciencias, Montevideo (Uruguay)
OSTI ID:
20680195
Research Organizations:
Sociedad Uruguaya de Geologia, Montevideo (Uruguay)
Country of Origin:
Uruguay
Language:
Spanish
Other Identifying Numbers:
TRN: UY0500075115072
Availability:
Available from DNETN Library;INIS
Submitting Site:
INIS
Size:
page(s) 1-9
Announcement Date:
Jan 07, 2006

Citation Formats

Tourn, S, and Castro, L. . E mail: selvia@fcen.uba.ar, lilianacastro@fibertel.com.ar. Characterization of agua de Ramon marbles, Cordoba Province, Argentina; Caracterizacion de los marmoles de agua de Ramon Provincia de Cordoba, Argentina. Uruguay: N. p., 2004. Web.
Tourn, S, & Castro, L. . E mail: selvia@fcen.uba.ar, lilianacastro@fibertel.com.ar. Characterization of agua de Ramon marbles, Cordoba Province, Argentina; Caracterizacion de los marmoles de agua de Ramon Provincia de Cordoba, Argentina. Uruguay.
Tourn, S, and Castro, L. . E mail: selvia@fcen.uba.ar, lilianacastro@fibertel.com.ar. 2004. "Characterization of agua de Ramon marbles, Cordoba Province, Argentina; Caracterizacion de los marmoles de agua de Ramon Provincia de Cordoba, Argentina." Uruguay.
@misc{etde_20680195,
title = {Characterization of agua de Ramon marbles, Cordoba Province, Argentina; Caracterizacion de los marmoles de agua de Ramon Provincia de Cordoba, Argentina}
author = {Tourn, S, and Castro, L. . E mail: selvia@fcen.uba.ar, lilianacastro@fibertel.com.ar}
abstractNote = {Agua de Ramon district is located in the NW of Cordoba, Argentina, between 3 49' and 30{sup 0}52' S and 65{sup 0}21' and 65{sup 0}24' W, in the Eastern Pampean Range setting. It was a very important tungsten district until the end of 1950'decade when tungsten mining became of no economic interest. The objective is to report for the first time the petrological, mineralogical and geochemical characteristics of several marble lenses located in the sourthern of the area. Marble outcrops are lenticular ranging from 1 m to 80 m in length and 0.50 m to 20 m width. They appear massive, fine-grained and in light colors (white, pale green, very light brown and pale gray). These last varieties show a distinct banded structure due to little differences in color. These marbles are mainly composed of magnesian calcite accompanied by minor amounts of dolomite, forsterite, humite group minerals, tremolite, talc, serpentine and clinochlore, and scheelite, sphene, apatite and opaque minerals like hematite, magnetite, illmenite, pirrothite and pyrite as accessory minerals. Major chemical analyses indicate a relatively high SiO2 and MgO content, and minor CaO, in comparison with marbles of this type. Mineral paragenesis was useful to evaluate metamorphism conditions in this area. [Spanish] El distrito Agua de Ramon se localiza en el departamento de Minas al noroeste de la provincia de Cordoba, Argentina, entre los paralelos 30{sup 0}49' y 30{sup 0}52' de latitud sur y los meridianos 65{sup 0}21' y 65{sup 0}24' de longitud oeste, en el ambito de las Sierras Pampeanas Orientales. En el pasado constituyo un importante distrito de explotacion wolframifera, pero dicha actividad se halla paralizada desde fines de la decada del '50. El objetivo de este trabajo es hacer conocer por primera vez las caracteristicas de los marmoles localizados en el sector sur desde el punto de vista petrografico, mineralogico y geoquimico de manera que permita realizar un analisis petrogenetico. Los cuerpos son de formas lenticulares, con potencias y longitudes variables (0.50 m a 20 m y 1 m a 80 m). Los marmoles son de color blanco y estructura maciza o bien en tonalidades verdosas, castanas y grises, dando paso a una estructura bandeada no marcada; la textura es de grano fino a mediano. Su composicion es esencialmente calcitica con contenidos de magnesio elevados en relacion con su mineralogia, que consiste en calcita, dolomita, forsterita, grupo de la humita, tremolita, talco, serpentina y clinocloro. Los accesorios son scheelita, titanita, apatita y minerales opacos como magnetita, ilmenita, hematita, pirrotina y pirita. Los analisis quimicos mayoritarios indican contenidos relativamente elevados de SiO2 y MgO y menores de CaO en comparacion con valores de la literatura. La paragenesis registrada en estos marmoles permitio evaluar las condiciones de metamorfismo imperantes en el area.}
place = {Uruguay}
year = {2004}
month = {Sep}
}