Delineation of mineralization zones in porphyry Cu deposits by fractal concentration-volume modeling

Afzal, Peyman, Alghalandis, Younes Fadakar, Khakzad, Ahmad, Moarefvand, Parviz and Omran, Nematolah Rashidnejad (2011) Delineation of mineralization zones in porphyry Cu deposits by fractal concentration-volume modeling. Journal of Geochemical Exploration, 108 3: 220-232. doi:10.1016/j.gexplo.2011.03.005

Author Afzal, Peyman
Alghalandis, Younes Fadakar
Khakzad, Ahmad
Moarefvand, Parviz
Omran, Nematolah Rashidnejad
Title Delineation of mineralization zones in porphyry Cu deposits by fractal concentration-volume modeling
Journal name Journal of Geochemical Exploration   Check publisher's open access policy
ISSN 0375-6742
Publication date 2011-03-01
Sub-type Article (original research)
DOI 10.1016/j.gexplo.2011.03.005
Open Access Status Not yet assessed
Volume 108
Issue 3
Start page 220
End page 232
Total pages 13
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Subject 1906 Geochemistry and Petrology
1905 Economic Geology
Abstract The purpose of this study was to identify the various mineralization zones especially supergene enrichment and hypogene in two different Iranian porphyry Cu deposits, based on subsurface data and by using the proposed concentration-volume (C-V) fractal method. The Sungun and Chah-Firuzeh porphyry Cu deposits, which are situated in NW and SE Iran, respectively, were selected for this study. Straight lines fitted through log-log plots showing C-V relations for Cu were employed to separate supergene enrichment and hypogene zones from oxidation zones and barren host rocks in the two deposits and to distinguish a skarn mineralized zone from the hypogene zone in Sungun deposit. In the proposed C-V fractal method, the identification of mineralization zones is based on power-law relationships between Cu concentrations and the volume of rocks hosting porphyry Cu mineralization. Separate subsurface data from the two deposits were analyzed by C-V fractal method and the results have been compared with geological models which included alteration and mineralogical models. The comparison shows that the interpreted zones based on the C-V fractal method are consistent with the geological models. The proposed C-V method is a new approach to defining zones in a mineral deposit and there was no commercial software available to perform the relevant calculations; therefore, a fractal concentration-volume (FCV) software was designed by the authors to achieve this goal.
Keyword Mineralization zones
Porphyry deposits
Concentration-volume (C-V) fractal model
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Sustainable Minerals Institute Publications
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