Reactive transport model of the formation of oxide-type Ni-laterite profiles (Punta Gorda, Moa Bay, Cuba)

Oxide-type Ni-laterite deposits are characterized by a dominant limonite zone with goethite as the economically most important Ni ore mineral and a thin zone of hydrous Mg silicate-rich saprolite beneath the magnesium discontinuity. Fe, less soluble, is mainly retained forming goethite, while Ni is...

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Authors: Domènech Ortí, Cristina, Galí Medina, Salvador, 1949-, Villanova de Benavent, Cristina, Soler, Josep M., Proenza Fernández, Joaquín Antonio
Format: article
Status:Versión aceptada para publicación
Publication Date:2017
Country:España
Institution:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repository:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/160457
Online Access:https://hdl.handle.net/2445/160457
Access Level:Open access
Keyword:Compostos de níquel
Laterita
Cuba
Nickel compounds
Laterite
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spelling Reactive transport model of the formation of oxide-type Ni-laterite profiles (Punta Gorda, Moa Bay, Cuba)Domènech Ortí, CristinaGalí Medina, Salvador, 1949-Villanova de Benavent, CristinaSoler, Josep M.Proenza Fernández, Joaquín AntonioCompostos de níquelLateritaCubaNickel compoundsLateriteCubaOxide-type Ni-laterite deposits are characterized by a dominant limonite zone with goethite as the economically most important Ni ore mineral and a thin zone of hydrous Mg silicate-rich saprolite beneath the magnesium discontinuity. Fe, less soluble, is mainly retained forming goethite, while Ni is redeposited at greater depth in a Fe(III) and Ni-rich serpentine (serpentine II) or in goethite, where it adsorbs or substitutes for Fe in the mineral structure. Here, a 1D reactive transport model, using CrunchFlow, of Punta Gorda oxide-type Ni-laterite deposit (Moa Bay, Cuba) formation is presented. The model reproduces the formation of the different laterite horizons in the profile from an initial, partially serpentinized peridotite, in 10(6) years, validating the conceptual model of the formation of this kind of deposits in which a narrow saprolite horizon rich in Ni-bearing serpentine is formed above peridotite parent rock and a thick limonite horizon is formed over saprolite. Results also confirm that sorption of Ni onto goethite can explain the weight percent of Ni found in the Moa goethite.Sensitivity analyses accounting for the effect of key parameters (composition, dissolution rate, carbonate concentration, quartz precipitation) on the model results are also presented. It is found that aqueous carbonate concentration and quartz precipitation significantly affects the laterization process rate, while the effect of the composition of secondary serpentine or of mineral dissolution rates is minor. The results of this reactive transport modeling have proven useful to validate the conceptual models derived from field observations.Springer Verlag2020202020172020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion89 p.application/pdfhttps://hdl.handle.net/2445/160457Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1007/s00126-017-0713-0Mineralium Deposita, 2017, vol. 52, num. 7, p. 993-1010https://doi.org/10.1007/s00126-017-0713-0(c) Springer Verlag, 2017info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1604572026-05-29T05:05:01Z
dc.title.none.fl_str_mv Reactive transport model of the formation of oxide-type Ni-laterite profiles (Punta Gorda, Moa Bay, Cuba)
title Reactive transport model of the formation of oxide-type Ni-laterite profiles (Punta Gorda, Moa Bay, Cuba)
spellingShingle Reactive transport model of the formation of oxide-type Ni-laterite profiles (Punta Gorda, Moa Bay, Cuba)
Domènech Ortí, Cristina
Compostos de níquel
Laterita
Cuba
Nickel compounds
Laterite
Cuba
title_short Reactive transport model of the formation of oxide-type Ni-laterite profiles (Punta Gorda, Moa Bay, Cuba)
title_full Reactive transport model of the formation of oxide-type Ni-laterite profiles (Punta Gorda, Moa Bay, Cuba)
title_fullStr Reactive transport model of the formation of oxide-type Ni-laterite profiles (Punta Gorda, Moa Bay, Cuba)
title_full_unstemmed Reactive transport model of the formation of oxide-type Ni-laterite profiles (Punta Gorda, Moa Bay, Cuba)
title_sort Reactive transport model of the formation of oxide-type Ni-laterite profiles (Punta Gorda, Moa Bay, Cuba)
dc.creator.none.fl_str_mv Domènech Ortí, Cristina
Galí Medina, Salvador, 1949-
Villanova de Benavent, Cristina
Soler, Josep M.
Proenza Fernández, Joaquín Antonio
author Domènech Ortí, Cristina
author_facet Domènech Ortí, Cristina
Galí Medina, Salvador, 1949-
Villanova de Benavent, Cristina
Soler, Josep M.
Proenza Fernández, Joaquín Antonio
author_role author
author2 Galí Medina, Salvador, 1949-
Villanova de Benavent, Cristina
Soler, Josep M.
Proenza Fernández, Joaquín Antonio
author2_role author
author
author
author
dc.subject.none.fl_str_mv Compostos de níquel
Laterita
Cuba
Nickel compounds
Laterite
Cuba
topic Compostos de níquel
Laterita
Cuba
Nickel compounds
Laterite
Cuba
description Oxide-type Ni-laterite deposits are characterized by a dominant limonite zone with goethite as the economically most important Ni ore mineral and a thin zone of hydrous Mg silicate-rich saprolite beneath the magnesium discontinuity. Fe, less soluble, is mainly retained forming goethite, while Ni is redeposited at greater depth in a Fe(III) and Ni-rich serpentine (serpentine II) or in goethite, where it adsorbs or substitutes for Fe in the mineral structure. Here, a 1D reactive transport model, using CrunchFlow, of Punta Gorda oxide-type Ni-laterite deposit (Moa Bay, Cuba) formation is presented. The model reproduces the formation of the different laterite horizons in the profile from an initial, partially serpentinized peridotite, in 10(6) years, validating the conceptual model of the formation of this kind of deposits in which a narrow saprolite horizon rich in Ni-bearing serpentine is formed above peridotite parent rock and a thick limonite horizon is formed over saprolite. Results also confirm that sorption of Ni onto goethite can explain the weight percent of Ni found in the Moa goethite.Sensitivity analyses accounting for the effect of key parameters (composition, dissolution rate, carbonate concentration, quartz precipitation) on the model results are also presented. It is found that aqueous carbonate concentration and quartz precipitation significantly affects the laterization process rate, while the effect of the composition of secondary serpentine or of mineral dissolution rates is minor. The results of this reactive transport modeling have proven useful to validate the conceptual models derived from field observations.
publishDate 2017
dc.date.none.fl_str_mv 2017
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/160457
url https://hdl.handle.net/2445/160457
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1007/s00126-017-0713-0
Mineralium Deposita, 2017, vol. 52, num. 7, p. 993-1010
https://doi.org/10.1007/s00126-017-0713-0
dc.rights.none.fl_str_mv (c) Springer Verlag, 2017
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Springer Verlag, 2017
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 89 p.
application/pdf
dc.publisher.none.fl_str_mv Springer Verlag
publisher.none.fl_str_mv Springer Verlag
dc.source.none.fl_str_mv Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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