Comparing the accuracy of two approaches to account for internal dilution: A case study from a porphyry copper deposit

Rodrigo Alfaro; Mohammad Maleki; Nasser Madani; Saeed Soltani-Mohammadi

doi:10.1080/17480930.2023.2192030

Comparing the accuracy of two approaches to account for internal dilution: A case study from a porphyry copper deposit

Rodrigo Alfaro, Mohammad Maleki, Nasser Madani, Saeed Soltani-Mohammadi

Nazarbayev University

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Dilution effects should be considered in the estimated model of deposit due to its significant impact on feasibility studies, mine planning and scheduling, milling, and stockpiling. This work compares the capacity of two approaches for modelling dilution of intrusive barren dykes into the ore body in a copper deposit. Two approaches were used to generate an undiluted model of copper grade in a copper deposit, which is cross cut by intrusive dykes. The results demonstrated that the second approach is more advantageous in comparison with the first approach, especially when there is hard contact between the ore and barren dykes.

Original language	English
Pages (from-to)	441-459
Number of pages	19
Journal	International Journal of Mining, Reclamation and Environment
Volume	37
Issue number	6
DOIs	https://doi.org/10.1080/17480930.2023.2192030
Publication status	Published - 2023

Keywords

dilution
geostatistical simulation
hierarchical prediction
Mineral resource evaluation

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Geology
Earth-Surface Processes
Management of Technology and Innovation

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10.1080/17480930.2023.2192030

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AU - Maleki, Mohammad

AU - Madani, Nasser

AU - Soltani-Mohammadi, Saeed

PY - 2023

Y1 - 2023

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AB - Dilution effects should be considered in the estimated model of deposit due to its significant impact on feasibility studies, mine planning and scheduling, milling, and stockpiling. This work compares the capacity of two approaches for modelling dilution of intrusive barren dykes into the ore body in a copper deposit. Two approaches were used to generate an undiluted model of copper grade in a copper deposit, which is cross cut by intrusive dykes. The results demonstrated that the second approach is more advantageous in comparison with the first approach, especially when there is hard contact between the ore and barren dykes.

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KW - hierarchical prediction

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Comparing the accuracy of two approaches to account for internal dilution: A case study from a porphyry copper deposit

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Keywords

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