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Conference papers

3D modelling of Supergene Alteration of the Koniambo Massif, New Caledonian Peridotite Nappe

Christian Le Carlier de Veslud 1 Benoît Quesnel 1 Pierre Gautier 1 Philippe Boulvais 1 Michel Cathelineau 2 Maxime Drouillet
1 GR - Géosciences Rennes
2 GeoRessources
Abstract : Resulting from the weathering of the Peridotite Nappe, laterites are abundant in New Caledonia and host one of the largest nickel ore deposit worldwide. Based on an exceptional drilling dataset provided by the Koniambo Nickel SAS company, this work presents a preliminary 3D modelling. It shows that the laterites are located along the ridges of the massif and are organized as a set of sinkhole-like patches. Between these patches, areas with thin or no limonite cover are characterized by higher averaged Ni-contents. Therefore, lateritization and Ni mineralisation should not be considered as resulting from a strictly vertical progression of the alteration front, but must involve more complex processes, such as lateral transfers or tectonic control.
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Conference papers
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https://hal-insu.archives-ouvertes.fr/insu-01184850
Contributor : Isabelle Dubigeon Connect in order to contact the contributor
Submitted on : Tuesday, August 18, 2015 - 9:15:26 AM
Last modification on : Wednesday, May 11, 2022 - 4:20:39 AM

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  • HAL Id : insu-01184850, version 1

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INSU | CNRS | UNIV-RENNES1 | GR | OSUR | GR-PPDB | GR-3T | UNIV-LORRAINE | UNIV-RENNES | OTELO-UL | GEORESSOURCES-UL | UR1-ENV | UR2-HB | UNIV-RENNES2 | INRAE

Citation

Christian Le Carlier de Veslud, Benoît Quesnel, Pierre Gautier, Philippe Boulvais, Michel Cathelineau, et al.. 3D modelling of Supergene Alteration of the Koniambo Massif, New Caledonian Peridotite Nappe. SGA2015: 13th Biennial meeting, Aug 2015, Nancy, France. pp.1173-1176. ⟨insu-01184850⟩

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