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Delineation of mineralization zones by multivariate fractal and zonality modeling in south of the Sungun and Kighal porphyry systems, NW, Iran

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Abstract

The purpose of the study was to identify the hypogene mineralization zone in the south of Sungun and Kighal porphyry Cu deposits, based on subsurface data and by using the proposed concentration–array (C–A) multivariate fractal and zonality modeling. The area (Kighal and south of the Sungun mine) is located in northwestern part of the Arasbaran Magmatic Zone (AMZ). AMZ is the host of large porphyry copper and gold epithermal deposits in the northwest of Iran. A litho-geochemical survey used to extract new anomalies. And also, the research has discussed statistics, principal component analysis (PCA) and hierarchical cluster analysis, estimation maps, and multi-element associations in the prospect area. The C-A multivariate fractal and zonality modeling was used for map classification and finally draw promised areas for the litho-geochemical survey in the Kighal prospect. According to multivariate PCA analysis, three groups are determined: the first group is positively correlated with component 2 and reflects the association between Cu and Mo elements that are similar to porphyry copper deposits associated elements and can be a good indicator for porphyry copper mineralization. Investigation of lithogeochemical data and separation of anomalies by C-A multivariate fractal and zonality modeling in south of the Sungun mine and Kighal porphyry prospect revealed that this method has high efficiency in separating anomalies and determining the position of mineralization. Geochemical studies and the field-based obtained data showed that the mineralization and alteration are limited to monzonitic rocks and are located in the southern and eastern parts of the study area, which are in line with the phyllic and mostly potassic alterations.

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Fig. 1

modified from Aghanabati, 1991, 1998; Hassanpour, 2010; Hassanpour et al., 2015;). b Simplified geology Map of the Kighal area (lower after NICICO, 2007). Abbreviation: UDMB Urmieh-Dokhtar Magmatic Belt, Ean Eocene andesite, Er Eocene rhyolite, Et2 Eocene tuffs, Oan Oligocene andesite, Oda Oligocene dacite, Or Oligocene rhyolite, Otc Oligocene trachye PLQc Pliocen conglomerate, PLQv Pliocene volcanoclastics, Qb Quaternary basalts, Qp Quaternary porphyrite, Qqan Quaternary andesite, Qv Quaternary volcanoclastics, dq: Quartz diorite, gd granodiorite, mz monzonite

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Funding

The research is a part of the third author MS.c. thesis. The research was funded by “Exploration Department” at NICICO (National Iranian Copper Industries Company). Supports by Mohammad Kargar and Dr. Mehrdad Heidari, administrators of “Exploration and Engineering Development Department,” were a prerequisite for initiation and completion of the research.

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Authors and Affiliations

  1. Department of Geology, Payame Noor University, Tehran, P.O. Box 19395-3697, Iran

    Shohreh Hassanpour

  2. Faculty of Engineering, Imam Khomeini International University, Qazvin, Iran

    Saeedeh Senemari & Nahid Roomi

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  1. Shohreh Hassanpour
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  2. Saeedeh Senemari
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  3. Nahid Roomi
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Correspondence to Shohreh Hassanpour.

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Responsible Editor: Domenico M. Doronzo

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Hassanpour, S., Senemari, S. & Roomi, N. Delineation of mineralization zones by multivariate fractal and zonality modeling in south of the Sungun and Kighal porphyry systems, NW, Iran. Arab J Geosci 15, 703 (2022). https://doi.org/10.1007/s12517-022-09845-2

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