The geological context of gems in the Velasco Pegmatitic District, Argentina

Autores
Sardi, Fernando Guillermo
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Velasco Pegmatitic District is located in the Velasco range, La Rioja province, northwestern Argentina. The Velasco range is made up of several granitic units of different petrography, magmatic evolution and age among which are the Huaco and Sanagasta granites. The pegmatites in the Velasco district have a spatial and genetic relationship with these granites and belong to the rare-element class, beryl type, beryl-columbitephosphate subtype. The pegmatites are usually zoned and the K-feldspar zone is generally the most important for gem-quality beryl. Heliodor and aquamarine varieties are present and these crystals can be cut to yield products of attractive beauty. Other beryl crystals with poor transparency can be utilized for cabochons or tumble polished. Rock-crystal and rosequartz are also present in some pegmatites from the Velasco district.
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
Materia
AQUAMARINE
HELIODOR
GEMSTONE
VELASCO RANGE
PEGMATITE
ROCK CRYSTAL
ROSE QUARTZ
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:11336/114646
Acceder
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network_name_str CONICET Digital (CONICET)
spelling The geological context of gems in the Velasco Pegmatitic District, ArgentinaSardi, Fernando GuillermoAQUAMARINEHELIODORGEMSTONEVELASCO RANGEPEGMATITEROCK CRYSTALROSE QUARTZhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Velasco Pegmatitic District is located in the Velasco range, La Rioja province, northwestern Argentina. The Velasco range is made up of several granitic units of different petrography, magmatic evolution and age among which are the Huaco and Sanagasta granites. The pegmatites in the Velasco district have a spatial and genetic relationship with these granites and belong to the rare-element class, beryl type, beryl-columbitephosphate subtype. The pegmatites are usually zoned and the K-feldspar zone is generally the most important for gem-quality beryl. Heliodor and aquamarine varieties are present and these crystals can be cut to yield products of attractive beauty. Other beryl crystals with poor transparency can be utilized for cabochons or tumble polished. Rock-crystal and rosequartz are also present in some pegmatites from the Velasco district.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; ArgentinaGemmological Association of Great Britain2008-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/114646Sardi, Fernando Guillermo; The geological context of gems in the Velasco Pegmatitic District, Argentina; Gemmological Association of Great Britain; The Journal of Gemmology; 31; 3/4; 12-2008; 85-891355-4565CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://gem-a.com/images/Documents/JoG/JoG2008_31_3-4.pdfinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:32:28Zoai:ri.conicet.gov.ar:11336/114646instacron: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:34982025-09-29 10:32:28.837CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The geological context of gems in the Velasco Pegmatitic District, Argentina
title The geological context of gems in the Velasco Pegmatitic District, Argentina
spellingShingle The geological context of gems in the Velasco Pegmatitic District, Argentina
Sardi, Fernando Guillermo
AQUAMARINE
HELIODOR
GEMSTONE
VELASCO RANGE
PEGMATITE
ROCK CRYSTAL
ROSE QUARTZ
title_short The geological context of gems in the Velasco Pegmatitic District, Argentina
title_full The geological context of gems in the Velasco Pegmatitic District, Argentina
title_fullStr The geological context of gems in the Velasco Pegmatitic District, Argentina
title_full_unstemmed The geological context of gems in the Velasco Pegmatitic District, Argentina
title_sort The geological context of gems in the Velasco Pegmatitic District, Argentina
dc.creator.none.fl_str_mv Sardi, Fernando Guillermo
author Sardi, Fernando Guillermo
author_facet Sardi, Fernando Guillermo
author_role author
dc.subject.none.fl_str_mv AQUAMARINE
HELIODOR
GEMSTONE
VELASCO RANGE
PEGMATITE
ROCK CRYSTAL
ROSE QUARTZ
topic AQUAMARINE
HELIODOR
GEMSTONE
VELASCO RANGE
PEGMATITE
ROCK CRYSTAL
ROSE QUARTZ
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Velasco Pegmatitic District is located in the Velasco range, La Rioja province, northwestern Argentina. The Velasco range is made up of several granitic units of different petrography, magmatic evolution and age among which are the Huaco and Sanagasta granites. The pegmatites in the Velasco district have a spatial and genetic relationship with these granites and belong to the rare-element class, beryl type, beryl-columbitephosphate subtype. The pegmatites are usually zoned and the K-feldspar zone is generally the most important for gem-quality beryl. Heliodor and aquamarine varieties are present and these crystals can be cut to yield products of attractive beauty. Other beryl crystals with poor transparency can be utilized for cabochons or tumble polished. Rock-crystal and rosequartz are also present in some pegmatites from the Velasco district.
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
description The Velasco Pegmatitic District is located in the Velasco range, La Rioja province, northwestern Argentina. The Velasco range is made up of several granitic units of different petrography, magmatic evolution and age among which are the Huaco and Sanagasta granites. The pegmatites in the Velasco district have a spatial and genetic relationship with these granites and belong to the rare-element class, beryl type, beryl-columbitephosphate subtype. The pegmatites are usually zoned and the K-feldspar zone is generally the most important for gem-quality beryl. Heliodor and aquamarine varieties are present and these crystals can be cut to yield products of attractive beauty. Other beryl crystals with poor transparency can be utilized for cabochons or tumble polished. Rock-crystal and rosequartz are also present in some pegmatites from the Velasco district.
publishDate 2008
dc.date.none.fl_str_mv 2008-12
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/11336/114646
Sardi, Fernando Guillermo; The geological context of gems in the Velasco Pegmatitic District, Argentina; Gemmological Association of Great Britain; The Journal of Gemmology; 31; 3/4; 12-2008; 85-89
1355-4565
CONICET Digital
CONICET
url http://hdl.handle.net/11336/114646
identifier_str_mv Sardi, Fernando Guillermo; The geological context of gems in the Velasco Pegmatitic District, Argentina; Gemmological Association of Great Britain; The Journal of Gemmology; 31; 3/4; 12-2008; 85-89
1355-4565
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://gem-a.com/images/Documents/JoG/JoG2008_31_3-4.pdf
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
application/pdf
dc.publisher.none.fl_str_mv Gemmological Association of Great Britain
publisher.none.fl_str_mv Gemmological Association of Great Britain
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
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score 13.069144

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