Morphological and compositional characterization of gold contained in ferricretes of a weathered profile (Minvoul greenstone belt, Gabon)

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dc.contributor.authorIglesias Martínez, Mario
dc.contributor.authorOrdóñez Casado, Berta
dc.contributor.authorBerrezueta, Edgar
dc.contributor.authorPérez Garrido, Carlos
dc.date.accessioned2023-06-17T13:25:35Z
dc.date.available2023-06-17T13:25:35Z
dc.date.issued2018-07
dc.description.abstractThis study presents the quantification and morphological characterization of particles and nuggets of almost pure gold found in the iron duricrust of a weathering profile of the Archean greenstone belt of Minvoul (Republic of Gabon). The weathered profile on the area (Figure 1) was defined through pits and trenches and consists, from bottom to top, on saprolite, mottled clay zone, iron duricrust, pisolitic gravels and yellow latosol. The iron duricrust constitutes a hard continuous layer, which is concretionary and pisolitic and consists of cemented nodules of goethite, hematite and other iron oxides and hydroxides. Samples from this horizon contain abundant particles of gold. The study of morphology and microchemical composition of gold grains has been widely used as a tool for the understanding of the dissolution, dispersion and gold concentration processes in supergene environments, and for determining the primary or secondary origin of gold grains across the lateritic horizons (Webster and Mann, 1984; Butt and Hough, 2006). Moreover, the results obtained represent a contribution for the knowledge of the gold-potential of the Ntem complex greenstone belts where mineralization on bedrock remains unknown.
dc.description.departmentDepto. de Mineralogía y Petrología
dc.description.facultyFac. de Ciencias Geológicas
dc.description.refereedTRUE
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/56201
dc.identifier.issn1885-7264
dc.identifier.officialurlhttp://www.ehu.eus/sem/macla_pdf/macla23/Macla23prov.Resumenes_SEM_2018.pdf
dc.identifier.relatedurlhttp://www.ehu.eus/sem/revista/macla.htm
dc.identifier.urihttps://hdl.handle.net/20.500.14352/13449
dc.journal.titleMacla
dc.language.isoeng
dc.publisherSociedad Española de Mineralogía
dc.rights.accessRightsopen access
dc.subject.cdu553.411( 6 72.1)
dc.subject.keywordSecondary Gold
dc.subject.keywordLaterite
dc.subject.keywordFerricrete
dc.subject.keywordGabon
dc.subject.keywordOro secundario
dc.subject.keywordLaterita
dc.subject.keywordGabón
dc.subject.ucmMineralogía (Geología)
dc.subject.unesco2506.11 Mineralogía
dc.titleMorphological and compositional characterization of gold contained in ferricretes of a weathered profile (Minvoul greenstone belt, Gabon)
dc.typejournal article
dc.volume.number23
dspace.entity.typePublication
relation.isAuthorOfPublicationcd9219ee-c614-4ae2-896d-b3c2605dc072
relation.isAuthorOfPublicationf5782ca0-6d61-4b8e-bea3-7b7c1df9f949
relation.isAuthorOfPublication.latestForDiscoverycd9219ee-c614-4ae2-896d-b3c2605dc072
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