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Using robust staged R-mode factor analysis and logistic function to identify probable Cu-mineralization zones in Khusf 1:100,000 sheets, east of Iran

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Abstract

Factor analysis method is a multivariate analysis technique that is widely used for the interpretation of stream sediment geochemical data. The purpose of factor analysis is describing the changes in a set of multi-element geochemical data by reducing the dimension of the data and variables to a number of factors that can present the hidden association between elements. Differences in mobility, physical, and chemical properties of the elements and the nature of the factor analysis method in which the matrix of all data is used cause paragenes elements not to be found on the output of factor analysis. In this research, to improve the output of factor analysis for deriving the best reagent multi-element mineralization, robust staged factor analysis method was used according to the close nature of geochemical data in order to identify the Cu-mineralization potential in Khusf 1:100,000 sheets located at the east of Iran. The robust staged factor analysis enhances the recognition of anomalous geochemical signatures and increases geochemical anomaly intensity and the percentage of the total explained variability of data. As indicated by the results of the study, few anomalous zones have been found in the study area. The observation of chalcopyrite and malachite mineralization in andesite and dacite–andesite rocks in a region during the field study confirms the effectiveness of the robust SFA technique. Such studies can be used by mine engineers and geologists for designing an optimum grid exploration on the next exploration steps.

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Acknowledgments

The authors would like to express their appreciations to the authorities of the South Khorasan Industry, Mine & Trade Organization who provided the facilities for doing this research. The financial support of the University of Birjand is gratefully thanked.

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Authors and Affiliations

  1. Mining Exploration, Department of Mining, Faculty of Engineering, University of Birjand, Birjand, Iran

    Majid Keykha Hoseinpoor

  2. Mining Engineering, Department of Mining, Faculty of Engineering, University of Birjand, P.O.B. 97175-376, Birjand, Iran

    Ahmad Aryafar

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  1. Majid Keykha Hoseinpoor
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Correspondence to Ahmad Aryafar.

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Keykha Hoseinpoor, M., Aryafar, A. Using robust staged R-mode factor analysis and logistic function to identify probable Cu-mineralization zones in Khusf 1:100,000 sheets, east of Iran. Arab J Geosci 9, 157 (2016). https://doi.org/10.1007/s12517-015-2266-9

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