Multivariate geostatistical simulation of the Gole Gohar iron ore deposit, Iran

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Abstract

© The Southern African Institute of Mining and Metallurgy, 2016. The quantification of mineral resources and evaluation of process performance in mining operations at Gole Gohar iron ore deposit requires a precise model of the spatial variability of three variables (Fe, P, and S) which must be determined. According to statistical analysis there are complex multivariate relationships between these variables such as stoichiometric constraints, nonlinearity, and heteroskedasticity. Due to the impact of these complexities in decision-making, they should be reproduced in geostatistical models. First of all, in order to maintain the compositional and stoichiometric constraints, additive log-ratio (alr) transformation has been applied. In the next step cosimulation, using stepwise conditional transformation (SCT) and sequential Gaussian simulation (SGS) has been used to simulate multivariate data. Through statistical and geostatistical validations it is shown that the algorithms were able to reproduce complex relationships between variables, both locally and globally.

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Hosseini, S. A., & Asghari, O. (2016). Multivariate geostatistical simulation of the Gole Gohar iron ore deposit, Iran. Journal of the Southern African Institute of Mining and Metallurgy, 116(5), 423–430. https://doi.org/10.17159/2411-9717/2016/v116n5a8

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