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    Characterisation of a laterite-type bauxite orebody geometry using a plurigaussian simulation approach

    Access Status
    Fulltext not available
    Authors
    Erten, Oktay
    Renard, D.
    Beucher, H.
    Desassis, N.
    McAndrew, L.
    Topal, Erkan
    Date
    2015
    Type
    Conference Paper
    
    Metadata
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    Citation
    Erten, O. and Renard, D. and Beucher, H. and Desassis, N. and McAndrew, L. and Topal, E. 2015. Characterisation of a laterite-type bauxite orebody geometry using a plurigaussian simulation approach, in Proceedings of The 17th annual conference of the International Association for Mathematical Geosciences (IAMG), Sep 5-13 2015. Freiberg, Germany: IAMG.
    Source Conference
    17th annual conference of the International Association for Mathematical Geosciences
    ISBN
    9783000503375
    School
    Dept of Mining Eng & Metallurgical Eng
    URI
    http://hdl.handle.net/20.500.11937/33098
    Collection
    • Curtin Research Publications
    Abstract

    A typical laterite-type bauxite deposit is formed from tropically weathered mafic-ultramafic complexes. The components of the weathering profile such as bauxite and underlying ferricrete units can be discontinuous with a relatively significant lateral variability. Understanding the major process of the lateritic weathering system and local lateral variability of the orebody contacts are of utmost importance in terms of an accurate orebody volume calculation and ore recovery at the alumina refinery. The plurigaussian simulation provides a tool that is used to simulate the lithotypes present in the regolith profile, which in turn reproduces the natural contacts between the geological units. The plurigaussian simulation approach was demonstrated in a case study where the geometry of the lateritic bauxite deposit was delineated. Four lithotypes including overburden, redsoil, bauxite and ferricrete were used in the simulation. The resulting realisation indicated a good reproduction of the conditioning data both laterally and vertically. Contrary to the deterministic models, the simulated realisation represented a possible geological model without the smoothing effect.

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