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dc.contributor.author
Galliski, Miguel Angel
dc.contributor.author
Marquez Zavalia, Maria Florencia
dc.contributor.author
Cerný, Petr
dc.contributor.author
Oyarzábal, Julio César
dc.contributor.author
Mugas Lobos, Ana Cecilia
dc.date.available
2018-09-12T20:44:15Z
dc.date.issued
2015-01
dc.identifier.citation
Galliski, Miguel Angel; Marquez Zavalia, Maria Florencia; Cerný, Petr; Oyarzábal, Julio César; Mugas Lobos, Ana Cecilia; The anatomy of an albite-type granitic pegmatite from the Totoral pegmatite field, San Luis, Argentina; Czech Geological Society; Journal of Geosciences (Czech Republic); 60; 1; 1-2015; 31-44
dc.identifier.issn
1803-1943
dc.identifier.uri
http://hdl.handle.net/11336/59453
dc.description.abstract
The Independencia Argentina albite-type granitic pegmatite is the most distal differentiate in the Cerro La Torre pegmatite group, located in the Eastern Pampean Ranges of Argentina. It is a zoned pegmatite formed at two main stages that probably shared the same origin but had separate evolutions. The product of the first stage was a pegmatite dominated by albite, quartz and muscovite, with rare K-feldspar and muscovite + albite pseudomorphs after spodumene, and accessory columbite-group minerals, beryl, fuorapatite as well as garnet. This first-stage pegmatite was emplaced forcefully and crystallized syn-kinematically. Resulting boudinage and necking-down produced the main body, bulbous in shape and asymmetric in zoning. This pegmatite was subsequently intruded by a melt that solidified to a very fine-grained, saccharoidal albite unit, composed in excess of 97 % by Ab99.1-99.6, with accessory columbite-group minerals and fluorapatite. The normative mineral composition of this unit corresponds very well with that of the experimental products of protracted fractionation of rare-element pegmatite melts, with high Na/K ratios and HFSE enrichment. The spatial and temporal association of the two pegmatitic melts, one enriched in H2O and the other one more evolved, Narich, almost alkaline and flux-bearing, strongly suggests that the two are cogenetic. They probably represent products of a rare-element pegmatite magma differentiation at depth that were extracted at different stages of its crystallization and emplaced at higher crustal levels.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Czech Geological Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Albite-Type
dc.subject
Hfse Flux-Rich Melt
dc.subject
Pegmatite
dc.subject
Two-Stage Process
dc.subject.classification
Meteorología y Ciencias Atmosféricas
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
The anatomy of an albite-type granitic pegmatite from the Totoral pegmatite field, San Luis, Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-28T19:04:01Z
dc.journal.volume
60
dc.journal.number
1
dc.journal.pagination
31-44
dc.journal.pais
República Checa
dc.journal.ciudad
Praga
dc.description.fil
Fil: Galliski, Miguel Angel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.description.fil
Fil: Marquez Zavalia, Maria Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.description.fil
Fil: Cerný, Petr. University of Manitoba; Canadá
dc.description.fil
Fil: Oyarzábal, Julio César. Secretaría de Minería; Argentina
dc.description.fil
Fil: Mugas Lobos, Ana Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
dc.journal.title
Journal of Geosciences (Czech Republic)
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.3190/jgeosci.187
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.jgeosci.org/detail/jgeosci.187
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