Granitic pegmatite chrysoberyl in a shear zone of the Achala batholith, Córdoba, Argentina

Autores
Lira, Raul
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Chrysoberyl of granitic pegmatite affiliation was found in the Ethel Mary mine, at coordinates S 31º 42´ 24.8´´ and W 64º 57´ 25.1´´, in the western margin of the Sierra Grande, San Alberto Department, Córdoba province, Argentina. Up to date, the sole published finding of chrysoberyl in Argentina was reported near Virorco, Sierra de San Luis. At this site, chrysoberyl occurs as a subordinate phase in the assemblage dumortierite-tourmaline-kyanite, in zoned veins or dikes of uncertain origin, emplaced in norite and hornblende gabbro. This contribution describes the geological setting and mineralogical peculiarities of this first finding of granitic pegmatite chrysoberyl in the country, in an attempt to constrain its formation environment. The lonely occurrence of chrysoberyl in the Ethel Mary mine, is interpreted as a by-product of the breakdown reaction of beryl, i.e., beryl ==>chrysoberyl+3quartz+2BeO, or beryl+2 aluminosilicate ==> 3chrysoberyl+8quartz. Its location in a reverse fault zone and textural evidence that shearing was active during pegmatite infill/replacement stage, suggest that chrysoberyl formation was favored by its confinement to a regional shear-stress environment, like other worldwide known examples. Strongly fractured and partially replaced chrysoberyl by muscovite aggregates suggest that a hydrothermal fluid was channelled through the fault zone during post-deformation stage.
Fil: Lira, Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Museo de Mineralogía y Geología "Dr. A. Stelzner"; Argentina
Materia
Chrysoberyl
Beryl
Granite pegmatite
Shear zone
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/240889
Acceder
id CONICETDig_67183cfd25b6bb292351c290f2b4ec80
oai_identifier_str oai:ri.conicet.gov.ar:11336/240889
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Granitic pegmatite chrysoberyl in a shear zone of the Achala batholith, Córdoba, ArgentinaLira, RaulChrysoberylBerylGranite pegmatiteShear zonehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Chrysoberyl of granitic pegmatite affiliation was found in the Ethel Mary mine, at coordinates S 31º 42´ 24.8´´ and W 64º 57´ 25.1´´, in the western margin of the Sierra Grande, San Alberto Department, Córdoba province, Argentina. Up to date, the sole published finding of chrysoberyl in Argentina was reported near Virorco, Sierra de San Luis. At this site, chrysoberyl occurs as a subordinate phase in the assemblage dumortierite-tourmaline-kyanite, in zoned veins or dikes of uncertain origin, emplaced in norite and hornblende gabbro. This contribution describes the geological setting and mineralogical peculiarities of this first finding of granitic pegmatite chrysoberyl in the country, in an attempt to constrain its formation environment. The lonely occurrence of chrysoberyl in the Ethel Mary mine, is interpreted as a by-product of the breakdown reaction of beryl, i.e., beryl ==>chrysoberyl+3quartz+2BeO, or beryl+2 aluminosilicate ==> 3chrysoberyl+8quartz. Its location in a reverse fault zone and textural evidence that shearing was active during pegmatite infill/replacement stage, suggest that chrysoberyl formation was favored by its confinement to a regional shear-stress environment, like other worldwide known examples. Strongly fractured and partially replaced chrysoberyl by muscovite aggregates suggest that a hydrothermal fluid was channelled through the fault zone during post-deformation stage.Fil: Lira, Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Museo de Mineralogía y Geología "Dr. A. Stelzner"; ArgentinaAsociación Geológica Argentina2011-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/240889Lira, Raul; Granitic pegmatite chrysoberyl in a shear zone of the Achala batholith, Córdoba, Argentina; Asociación Geológica Argentina; Asociación Geológica Argentina - Serie D: Publicaciones especiales; 14; 2-2011; 127-1300328-2767CONICET DigitalCONICETenginfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:13:07Zoai:ri.conicet.gov.ar:11336/240889instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:13:07.698CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Granitic pegmatite chrysoberyl in a shear zone of the Achala batholith, Córdoba, Argentina
title Granitic pegmatite chrysoberyl in a shear zone of the Achala batholith, Córdoba, Argentina
spellingShingle Granitic pegmatite chrysoberyl in a shear zone of the Achala batholith, Córdoba, Argentina
Lira, Raul
Chrysoberyl
Beryl
Granite pegmatite
Shear zone
title_short Granitic pegmatite chrysoberyl in a shear zone of the Achala batholith, Córdoba, Argentina
title_full Granitic pegmatite chrysoberyl in a shear zone of the Achala batholith, Córdoba, Argentina
title_fullStr Granitic pegmatite chrysoberyl in a shear zone of the Achala batholith, Córdoba, Argentina
title_full_unstemmed Granitic pegmatite chrysoberyl in a shear zone of the Achala batholith, Córdoba, Argentina
title_sort Granitic pegmatite chrysoberyl in a shear zone of the Achala batholith, Córdoba, Argentina
dc.creator.none.fl_str_mv Lira, Raul
author Lira, Raul
author_facet Lira, Raul
author_role author
dc.subject.none.fl_str_mv Chrysoberyl
Beryl
Granite pegmatite
Shear zone
topic Chrysoberyl
Beryl
Granite pegmatite
Shear zone
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Chrysoberyl of granitic pegmatite affiliation was found in the Ethel Mary mine, at coordinates S 31º 42´ 24.8´´ and W 64º 57´ 25.1´´, in the western margin of the Sierra Grande, San Alberto Department, Córdoba province, Argentina. Up to date, the sole published finding of chrysoberyl in Argentina was reported near Virorco, Sierra de San Luis. At this site, chrysoberyl occurs as a subordinate phase in the assemblage dumortierite-tourmaline-kyanite, in zoned veins or dikes of uncertain origin, emplaced in norite and hornblende gabbro. This contribution describes the geological setting and mineralogical peculiarities of this first finding of granitic pegmatite chrysoberyl in the country, in an attempt to constrain its formation environment. The lonely occurrence of chrysoberyl in the Ethel Mary mine, is interpreted as a by-product of the breakdown reaction of beryl, i.e., beryl ==>chrysoberyl+3quartz+2BeO, or beryl+2 aluminosilicate ==> 3chrysoberyl+8quartz. Its location in a reverse fault zone and textural evidence that shearing was active during pegmatite infill/replacement stage, suggest that chrysoberyl formation was favored by its confinement to a regional shear-stress environment, like other worldwide known examples. Strongly fractured and partially replaced chrysoberyl by muscovite aggregates suggest that a hydrothermal fluid was channelled through the fault zone during post-deformation stage.
Fil: Lira, Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Museo de Mineralogía y Geología "Dr. A. Stelzner"; Argentina
description Chrysoberyl of granitic pegmatite affiliation was found in the Ethel Mary mine, at coordinates S 31º 42´ 24.8´´ and W 64º 57´ 25.1´´, in the western margin of the Sierra Grande, San Alberto Department, Córdoba province, Argentina. Up to date, the sole published finding of chrysoberyl in Argentina was reported near Virorco, Sierra de San Luis. At this site, chrysoberyl occurs as a subordinate phase in the assemblage dumortierite-tourmaline-kyanite, in zoned veins or dikes of uncertain origin, emplaced in norite and hornblende gabbro. This contribution describes the geological setting and mineralogical peculiarities of this first finding of granitic pegmatite chrysoberyl in the country, in an attempt to constrain its formation environment. The lonely occurrence of chrysoberyl in the Ethel Mary mine, is interpreted as a by-product of the breakdown reaction of beryl, i.e., beryl ==>chrysoberyl+3quartz+2BeO, or beryl+2 aluminosilicate ==> 3chrysoberyl+8quartz. Its location in a reverse fault zone and textural evidence that shearing was active during pegmatite infill/replacement stage, suggest that chrysoberyl formation was favored by its confinement to a regional shear-stress environment, like other worldwide known examples. Strongly fractured and partially replaced chrysoberyl by muscovite aggregates suggest that a hydrothermal fluid was channelled through the fault zone during post-deformation stage.
publishDate 2011
dc.date.none.fl_str_mv 2011-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/240889
Lira, Raul; Granitic pegmatite chrysoberyl in a shear zone of the Achala batholith, Córdoba, Argentina; Asociación Geológica Argentina; Asociación Geológica Argentina - Serie D: Publicaciones especiales; 14; 2-2011; 127-130
0328-2767
CONICET Digital
CONICET
url http://hdl.handle.net/11336/240889
identifier_str_mv Lira, Raul; Granitic pegmatite chrysoberyl in a shear zone of the Achala batholith, Córdoba, Argentina; Asociación Geológica Argentina; Asociación Geológica Argentina - Serie D: Publicaciones especiales; 14; 2-2011; 127-130
0328-2767
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Asociación Geológica Argentina
publisher.none.fl_str_mv Asociación Geológica Argentina
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846083279216705536
score 13.22299

Publicaciones similares