Identification of probable porphyritic Au-Cu mineralization zones in the South Seachangi using AHP and FAHP methods

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Khajehmiri z.; SHAYESTEHFAR M.R.; MOEINZADEH H.

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Journal: GEOSCIENCES Year:2018 | Volume:27 | Issue:106 Page(s): 217-230

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Title

Identification of probable porphyritic Au-Cu mineralization zones in the South Seachangi using AHP and FAHP methods

Author(s)

Khajehmiri z. | SHAYESTEHFAR M.R. | MOEINZADEH H. | Issue Writer Certificate

Keywords

AHPQ2

FAHPQ1

South of SehchangiQ1

Porphyritic gold-copper mineralizationQ1

Abstract

Due to high cost, risk and time consuming nature of field operations and mineral explorations, the discovery of probable mineralization area is profoundly important. Thus, preparations of potential mineral map by means of GIS techniques for compilation all exploration factors is an essential matter. Various methods of mineral potential assessment have been developed. One of those most efficient techniques, based on nature of geology and mineral phenomena, is Analytical Hierarchy process (AHP) and Fuzzy Analytical Hierarchy process (FAHP). In this investigation, in order to prepare probable porphyritic gold copper zones map in 1: 100000 sheet of South of Sehchangi, AHP and FAHP have been implemented. In the study area, the witness layers including geology layers (thermal source rock and host rock), alteration, tectonic and geochemical layers depending on target (Porphyritic gold-copper mineralization) are weighted and then compiled by aid of AHP and FAHP. In final compiled map resulted by two mentioned methods, the anomalous zones are separated by fractal method. The comparison of final maps of probable Porphyritic gold-copper mineralization zones indicate that the results derived byFAHP is significantly more precise than AHP. Anomalous zones derived by this method (FAHP) are evaluated, anomalous zone 1 derived by FAHP is approved by previous analysis. The analysis results of mineralized samples of anomaly 2 indicate that samples have experienced copper enrichment and moreover, gold and arsenic elements are enriched as well. The results presented here and results of previous analyses approve mineral potential assessment derived by Fuzzy Analytical Hierarchy process (FAHP).

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APA: Copy

Khajehmiri, z., SHAYESTEHFAR, M.R., & MOEINZADEH, H.. (2018). Identification of probable porphyritic Au-Cu mineralization zones in the South Seachangi using AHP and FAHP methods. GEOSCIENCES, 27(106 ), 217-230. SID. https://sid.ir/paper/32094/en

Vancouver: Copy

Khajehmiri z., SHAYESTEHFAR M.R., MOEINZADEH H.. Identification of probable porphyritic Au-Cu mineralization zones in the South Seachangi using AHP and FAHP methods. GEOSCIENCES[Internet]. 2018;27(106 ):217-230. Available from: https://sid.ir/paper/32094/en

IEEE: Copy

z. Khajehmiri, M.R. SHAYESTEHFAR, and H. MOEINZADEH, “Identification of probable porphyritic Au-Cu mineralization zones in the South Seachangi using AHP and FAHP methods,” GEOSCIENCES, vol. 27, no. 106 , pp. 217–230, 2018, [Online]. Available: https://sid.ir/paper/32094/en

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