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http://hdl.handle.net/2445/160420
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DC Field | Value | Language |
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dc.contributor.author | Tauler i Ferré, Esperança | - |
dc.contributor.author | Lewis, J. F. | - |
dc.contributor.author | Villanova de Benavent, Cristina | - |
dc.contributor.author | Aiglsperger, Thomas Hans | - |
dc.contributor.author | Proenza Fernández, Joaquín Antonio | - |
dc.contributor.author | Domènech Ortí, Cristina | - |
dc.contributor.author | Gallardo, T. | - |
dc.contributor.author | Longo, Francisco | - |
dc.contributor.author | Galí Medina, Salvador, 1949- | - |
dc.date.accessioned | 2020-05-15T08:18:41Z | - |
dc.date.available | 2020-05-15T08:18:41Z | - |
dc.date.issued | 2017-07 | - |
dc.identifier.issn | 0026-4598 | - |
dc.identifier.uri | http://hdl.handle.net/2445/160420 | - |
dc.description.abstract | Hydrous Mg silicate-type Ni-laterite deposits, like those in the Falcondo district, Dominican Republic, are dominated by Ni-enriched serpentine and garnierite. Recently, abundant Ni-smectite in the saprolite zone have been discovered in Loma Ortega, one of the nine Ni-laterite deposits in Falcondo. A first detailed study on these Ni-smectites has been performed (μXRD, SEM, EPMA), in addition to a geochemical and mineralogical characterisation of the Loma Ortega profile (XRF, ICP-MS, XRD). Unlike other smectite occurrences in laterite profiles worldwide, the Loma Ortega smectites are trioctahedral and exhibit high Ni contents never reported before. These Ni-smectites may be formed from weathering of pyroxene and olivine, and their composition can be explained by the mineralogy and the composition of the Al-depleted, olivine-rich parent ultramafic rock. Our study shows that Ni-laterites are mineralogically complex, and that a hydrous Mg silicate ore and a clay silicate ore can be confined to the same horizon in the weathering profile, which has significant implications from a recovery perspective. In accordance, the classification of "hybrid hydrous Mg silicate - clay silicate" type Ni-laterite deposit for Loma Ortega would be more appropriate. | - |
dc.format.extent | 57 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Springer Verlag | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1007/s00126-017-0750-8 | - |
dc.relation.ispartof | Mineralium Deposita, 2017, vol. 52, p. 1011-1030 | - |
dc.relation.uri | https://doi.org/10.1007/s00126-017-0750-8 | - |
dc.rights | (c) Springer Verlag, 2017 | - |
dc.source | Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada) | - |
dc.subject.classification | Geoquímica | - |
dc.subject.classification | Mineralogia | - |
dc.subject.classification | Níquel | - |
dc.subject.classification | República Dominicana | - |
dc.subject.other | Geochemistry | - |
dc.subject.other | Mineralogy | - |
dc.subject.other | Nickel | - |
dc.subject.other | Dominican Republic | - |
dc.title | Discovery of Ni-smectite rich saprolite at Loma Ortega, Falcondo mining district (Dominican Republic): geochemistry and mineralogy of an unusual case of 'hybrid hydrous Mg silicate-clay silicate' type Ni-laterite | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 667723 | - |
dc.date.updated | 2020-05-15T08:18:41Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada) |
Files in This Item:
File | Description | Size | Format | |
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667723.pdf | 3.63 MB | Adobe PDF | View/Open |
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