Title: Mapping mineralised areas through disjunctive kriging and concentration-volume fractal modelling in the Chehelkureh copper deposit, Southeast Iran

Authors: Ali Akbar Daya

Addresses: Department of Mining Engineering, University of Sistan and Baluchestan, Zahedan, Iran

Abstract: This research aims to identify copper mineralised zones in the Chehelkureh copper vein deposit located in Southeastern Iran by utilising a combination of disjunctive kriging (DK) and concentration-volume (C-V) fractal methodologies. The DK analysis was conducted using data from boreholes, followed by the identification of mineralised zones through C-V fractal modelling. The C-V model indicates the presence of five geochemical zones characterised by copper thresholds of 0.059%, 0.473%, 0.952%, and 3.67%. Areas with copper grades below 0.059% are classified as non-mineralised wall rocks. The C-V model suggests that the primary copper mineralised zones are found in the eastern, central, and northeastern sections of the Chehelkureh deposit. The findings derived from the C-V fractal model have been compared with geological models that incorporate alteration and mineralogical aspects. This comparison indicates that the zones interpreted through the C-V fractal model align with the geological models.

Keywords: mineralised zone; disjunctive kriging; DK; concentration-volume fractal model; C-V; Chehelkureh deposit; Iran.

DOI: 10.1504/IJMME.2025.150819

International Journal of Mining and Mineral Engineering, 2025 Vol.16 No.4, pp.404 - 425

Received: 09 Oct 2024
Accepted: 18 Apr 2025
Published online: 23 Dec 2025 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article