Characterisation of a laterite-type bauxite orebody geometry using a plurigaussian simulation approach
MetadataShow full item record
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.
Showing items related by title, author, creator and subject.
Spatial Prediction of Lateral Variability of a Laterite Type Bauxite Horizon Using Ancillary Ground Penetrating Radar DataErten, Oktay; Kizil, Mehmet; Topal, Erkan; McAndrew, Lachlan (2013)Tropical laterite-type bauxite deposits often pose a unique challenge for resource modelling and mine planning due to the extreme lateral variability at the base of the bauxite ore unit within the regolith profile. An ...
Assessment of uncertainty in grade-tonnage curves of a multivariate lateritic bauxite deposit through min/max autocorrelation factor transformationErten, Oktay; Kizil, M.; Beamish, B.; McAndrew, L. (2011)Assessing uncertainty in grade-tonnage curves is rather crucial in resource estimation, as these curves provide information on how much ore within the deposit is above/below a given cut-off grade value. Conditional ...
Dagasan, Y.; Renard, P.; Straubhaar, J.; Erten, Oktay; Topal, Erkan (2018)The application of multiple-point statistics (MPS) in the mining industry is not yet widespread and there are very few applications so far. In this paper, we focus on the problem of algorithmic input parameter selection, ...