| dc.contributor.author | Domènech, Cristina | ca |
| dc.contributor.author | Vilanova-de-Benavent, Cristina | ca |
| dc.contributor.author | Proenza, Joaquín A. | ca |
| dc.contributor.author | Tauler, Esperança | ca |
| dc.contributor.author | Lara, Laura | ca |
| dc.contributor.author | Galí, Salvador | ca |
| dc.contributor.author | Soler, Josep M. | ca |
| dc.contributor.author | Campeny, Marc | ca |
| dc.contributor.author | Ibáñez-Insa, Jordi | ca |
| dc.contributor.other | Consorci del Museu de Ciències Naturals de Barcelona | ca |
| dc.date.accessioned | 2025-11-05T13:06:09Z | |
| dc.date.available | 2025-11-05T13:06:09Z | |
| dc.date.issued | 2022-06-22 | |
| dc.description | Cobalt demand is increasing due to its key role in the transition to clean energies. Although
the main Co ores are the sediment-hosted stratiform copper deposits of the Democratic Republic of
the Congo, Co is also a by-product of Ni–Co laterite deposits, where Co extraction efficiency depends,
among other factors, on the correct identification of Co-bearing minerals. In this paper, we reported
a detailed study of the Co mineralisation in the Ni–Co laterite profiles of Loma Caribe (Dominican
Republic) and Loma de Hierro (Venezuela). Cobalt is mainly associated with Mn-oxyhydroxide
minerals, with a composition between Ni asbolane and lithiophorite, although a Co association with
phyllosilicates has also been recorded in a Loma de Hierro deposit. In Loma Caribe, Co-bearing
Mn-oxyhydroxide minerals mainly developed colloform aggregates, and globular to spherulitic
grains, while in Loma de Hierro, they displayed banded colloform, fibrous or tabular textures. Most
of the compositional analyses of Mn-oxyhydroxides yielded 20 and 40 wt.% Mn, with Ni and Co
up to 16 and 10 wt.%, respectively. In both profiles, Mn-bearing minerals were mainly found in the
transition from the oxide horizon to the saprolite, as observed in other laterite profiles in the world,
where the precipitation of Mn-bearing minerals is enhanced because of the pore solution saturation
and pH increase. | |
| dc.format | application/pdf | ca |
| dc.format.extent | 26 p. | ca |
| dc.identifier | http://hdl.handle.net/2072/522735 | |
| dc.identifier | https://doi.org/10.3390/min12080927 | |
| dc.identifier.citation | Minerals 2022, 12, 927 | ca |
| dc.identifier.entitat | consorcis | ca |
| dc.identifier.uri | http://hdl.handle.net/11703/127801 | |
| dc.language | eng | ca |
| dc.provenance | Recercat (Dipòsit de la Recerca de Catalunya) | ca |
| dc.rights | L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons:http://creativecommons.org/licenses/by/4.0/ | |
| dc.rights.accessrights | info:eu-repo/semantics/openAccess | ca |
| dc.subject | Níquel | |
| dc.subject | Cobalt | |
| dc.subject | Manganès | |
| dc.subject | Metalls de transició | |
| dc.subject | Laterita | |
| dc.subject | Veneçuela | |
| dc.subject | República Dominicana | |
| dc.subject | Carib (Regió) | |
| dc.subject | 549 | |
| dc.subject.category | Ciència i tecnologia | ca |
| dc.subject.forma | articles | ca |
| dc.title | Co-Mn mineralisations in the ni laterite deposits of Loma Caribe (Dominican Republic) and Loma de Hierro (Venezuela) | |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.type.driver | info:eu-repo/semantics/article | ca |
| metadadalocal.dependencia | 8008920 | |