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

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dc.conicet.avisoEditorialThe Journal of Gemmology archive is now available for everyone to view online. The archive goes back to 1947 when the first issue of The Journal was published.*
dc.conicet.fuenteindividual
dc.conicet.organizacionConsejo 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
dc.conicet.paisOrganizacionArgentina
dc.conicet.produccionid6303767
dc.contributor.authorSardi, Fernando Guillermo
dc.date.accessioned2020-09-23T18:03:23Z
dc.date.available2020-09-23T18:03:23Z
dc.date.issued2008-12
dc.date.updated2020-04-22T14:46:59Z
dc.description.abstractThe 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.es
dc.description.filFil: 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
dc.formatapplication/pdfes
dc.identifier.citationSardi, 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; 85-89es
dc.identifier.institucionalCONICET
dc.identifier.issn1355-4565es
dc.identifier.repoCONICET Digital
dc.identifier.urihttp://hdl.handle.net/11336/114646
dc.journal.ciudadLondones
dc.journal.number3/4es
dc.journal.pagination85-89es
dc.journal.paisReino Unidoes
dc.journal.titleThe Journal of Gemmologyes
dc.journal.volume31es
dc.language.isoenges
dc.publisherGemmological Association of Great Britaines
dc.relation.alternativeidinfo:eu-repo/semantics/altIdentifier/url/https://gem-a.com/images/Documents/JoG/JoG2008_31_3-4.pdf
dc.rightsinfo:eu-repo/semantics/openAccess*
dc.rights.urihttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/*
dc.subjectAQUAMARINEes
dc.subjectHELIODORes
dc.subjectGEMSTONEes
dc.subjectVELASCO RANGEes
dc.subjectPEGMATITEes
dc.subjectROCK CRYSTALes
dc.subjectROSE QUARTZes
dc.subject.classificationGeologíaes
dc.subject.classificationCiencias de la Tierra y relacionadas con el Medio Ambientees
dc.subject.classificationCIENCIAS NATURALES Y EXACTASes
dc.titleThe geological context of gems in the Velasco Pegmatitic District, Argentinaes
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion

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