## Abstract

Considering the multivariable deposits that consist of various attributes that are frequently spatially correlated, the uncertainty associated with the grade-tonnage curves is assessed through the joint conditional simulation techniques. This paper presents the joint simulation of five attributes using the Minimum/Maximum Autocorrelation Factors (MAF). The methodology for joint simulation is three-fold: (1) MAF is used to transform the attributes to non-correlated factors; (2) the variograms for each MAF are computed and modelled; (3) the independent MAFs are individually simulated and back-transformed to the original data space. The methodology is demonstrated in an iron ore deposit in Western Australia, where the attributes of an iron ore deposit are successfully decorrelated and simulated independently. The grade-tonnage curves for each realisation are plotted and compared with the generated one by the kriging estimate. The MAF approach proves itself to be an efficient method for joint simulation of multivariable deposits.

Original language | English |
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Title of host publication | Proceedings of the 16th International Association for Mathematical Geosciences - Geostatistical and Geospatial Approaches for the Characterization of Natural Resources in the Environment |

Subtitle of host publication | Challenges, Processes and Strategies, IAMG 2014 |

Editors | N. Janardhana Raju |

Publisher | Capital Publishing Company |

Pages | 333-336 |

Number of pages | 4 |

ISBN (Electronic) | 9789381891254 |

Publication status | Published - 2014 |

Externally published | Yes |

Event | 16th International Association for Mathematical Geosciences - Geostatistical and Geospatial Approaches for the Characterization of Natural Resources in the Environment: Challenges, Processes and Strategies, IAMG 2014 - New Delhi, India Duration: Oct 17 2014 → Oct 20 2014 |

### Publication series

Name | Proceedings of the 16th International Association for Mathematical Geosciences - Geostatistical and Geospatial Approaches for the Characterization of Natural Resources in the Environment: Challenges, Processes and Strategies, IAMG 2014 |
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### Other

Other | 16th International Association for Mathematical Geosciences - Geostatistical and Geospatial Approaches for the Characterization of Natural Resources in the Environment: Challenges, Processes and Strategies, IAMG 2014 |
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Country/Territory | India |

City | New Delhi |

Period | 10/17/14 → 10/20/14 |

## Keywords

- Grade-tonnage curves
- Iron ore deposit
- Minimum/Maximum Autocorrelation factors
- Multivariate simulation

## ASJC Scopus subject areas

- Mathematics (miscellaneous)
- General Earth and Planetary Sciences