Origen de la alunita y la natroalunita del depósito de caolín de Mina Equivocada (Prov. de Río Negro, Argentina)
| cic.isFulltext | true | es |
| cic.isPeerReviewed | true | es |
| cic.lugarDesarrollo | Universidad Nacional del Sur | es |
| cic.version | info:eu-repo/semantics/publishedVersion | es |
| dc.date.accessioned | 2016-12-14T13:34:33Z | |
| dc.date.available | 2016-12-14T13:34:33Z | |
| dc.identifier.uri | https://digital.cic.gba.gob.ar/handle/11746/4990 | |
| dc.title | Origen de la alunita y la natroalunita del depósito de caolín de Mina Equivocada (Prov. de Río Negro, Argentina) | es |
| dc.type | Documento de conferencia | es |
| dcterms.abstract | The origin of alunite and natroalunite from a kaolin deposit (Equivocada Mine, Rio Negro Province) has been studied. Chemical analysis showed that alunite is K<sub>0.89</sub> and natroalunite Na<sub>0.97</sub>, in agreement with X ray diffraction data. The high contents of minor elements in alunite, especially Ba and Sr are compatible with a hydrothermal origin in contrast to natroalunite whose very low values suggest a secondary origin. Alunite has a δ<sup>34<sup/>S = +15.9‰ and a δ<sup>18</sup>O = +12.9‰, while in natroalunite these values are -5.8‰ and +19.0‰ respectively. δ<sup>34<sup/>S values suggest that alunite formed from a hypogenic process of hydrothermal origin whereas natroalunite is probably related to a supergen origin. The occurrence of alunite in veins crosscutting the other minerals, indicates that it was the last mineral to crystallize. | en |
| dcterms.creator.author | Maiza, Pedro | es |
| dcterms.creator.author | Marfil, Silvina Andrea | es |
| dcterms.creator.author | Cardellach, E. | es |
| dcterms.creator.author | Corbella, M. | es |
| dcterms.extent | 5 p. | es |
| dcterms.isPartOf.issue | VII MinMet (Buenos Aires, 2006) | es |
| dcterms.isPartOf.series | Congreso de Mineralogía y Metalogenia | es |
| dcterms.issued | 2006 | |
| dcterms.language | Español | es |
| dcterms.license | Attribution 4.0 International (BY 4.0) | es |
| dcterms.subject.materia | Ingeniería de los Materiales | es |
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