3D modelling of Supergene Alteration of the Koniambo Massif, New Caledonian Peridotite Nappe - Archive ouverte HAL Access content directly
Conference Papers Year : 2015

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

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Christian Le Carlier de Veslud
  • Function : Author
  • PersonId : 761230
  • IdRef : 182225585
Benoît Quesnel
  • Function : Author
  • PersonId : 947846
Pierre Gautier
  • Function : Author
  • PersonId : 896698
Philippe Boulvais
  • Function : Author
  • PersonId : 840705
Michel Cathelineau
Maxime Drouillet
  • Function : Author

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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Dates and versions

insu-01184850 , version 1 (18-08-2015)

Identifiers

  • HAL Id : insu-01184850 , version 1

Cite

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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