MODELING PROCESS OF MINERAL POTENTIAL MAPPING USING FUZZY INFERENCE SYSTEMS (CASE STUDY: CHAH FIROOZEH COPPER DEPOSIT)

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ALAEI MOGHADAM S.; KARIMI M.; MESGARI M.S.; SAHEB ALZAMANI N.

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Journal: GEOSCIENCES Year:2014 | Volume:24 | Issue:93 Page(s): 53-66

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Title

MODELING PROCESS OF MINERAL POTENTIAL MAPPING USING FUZZY INFERENCE SYSTEMS (CASE STUDY: CHAH FIROOZEH COPPER DEPOSIT)

Author(s)

ALAEI MOGHADAM S. | KARIMI M. | MESGARI M.S. | SAHEB ALZAMANI N. | Issue Writer Certificate

Keywords

MINERAL POTENTIAL MAPPINGQ2

GISQ2

FUZZY INFERENCE SYSTEMQ2

PORPHYRY COPPER DEPOSITQ2

CHAH FIROOZEHQ2

Abstract

Due to the extensive areas of potential mineral reserves in the country, it seems necessary to have a systematic approach to identify and convert indices of mineral deposits into mines. Existing various conceptual models of mineral deposits, variety of both quantitative and qualitative data to explore mineral deposits and the expertise and different interests, cause the MINERAL POTENTIAL MAPPING process to be very complicated. So far, various methods such as the overlap index, fuzzy logic, neural networks and weights of evidence are used for modeling this complexity.Consideration the fuzzy nature of mineral exploration in the process of modeling exploratory data, applying expert knowledge and flexibility for all types of mineral deposits in the form of an integrated system is essential. Compared with other methods FUZZY INFERENCE SYSTEM has stated characteristics. To verify this, in this study, a FUZZY INFERENCE SYSTEM for modeling mineral potential was proposed and for the CHAH FIROOZEH copper deposit was implemented. The main stages of this research include fuzzifying factor maps using the appropriate membership functions and linguistic variables, combining factor maps using fuzzy inference (by creating if_then fuzzy rules database and using an appropriate decision-making model) and generating mineral potential map with defuzzification output. In the resulted mineral potential map, porphyry copper mineralization prone area is located in the central regions with north-south extension. For evaluation, 24 exploration boreholes in the area are complying with the mineral potential map. Based on the four classification types of mineral potential map, the compliance rate was calculated as 63.64%, 75%, 63.95% and 80.23%. Obtained mineral potential map is more accurate in the very low potential areas and 81.52% of the holes with very low state are located properly. In addition, resulted mineral potential map was compared with the mineral potential map generated using only fuzzy operators and without fuzzifying factor maps. The comparison shows that the mineral potential map that was generated using FUZZY INFERENCE SYSTEM, in four classifications used in this study has 6% greater compliance with the exploration boreholes in average.

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APA: Copy

ALAEI MOGHADAM, S., KARIMI, M., MESGARI, M.S., & SAHEB ALZAMANI, N.. (2014). MODELING PROCESS OF MINERAL POTENTIAL MAPPING USING FUZZY INFERENCE SYSTEMS (CASE STUDY: CHAH FIROOZEH COPPER DEPOSIT). GEOSCIENCES, 24(93), 53-66. SID. https://sid.ir/paper/32075/en

Vancouver: Copy

ALAEI MOGHADAM S., KARIMI M., MESGARI M.S., SAHEB ALZAMANI N.. MODELING PROCESS OF MINERAL POTENTIAL MAPPING USING FUZZY INFERENCE SYSTEMS (CASE STUDY: CHAH FIROOZEH COPPER DEPOSIT). GEOSCIENCES[Internet]. 2014;24(93):53-66. Available from: https://sid.ir/paper/32075/en

IEEE: Copy

S. ALAEI MOGHADAM, M. KARIMI, M.S. MESGARI, and N. SAHEB ALZAMANI, “MODELING PROCESS OF MINERAL POTENTIAL MAPPING USING FUZZY INFERENCE SYSTEMS (CASE STUDY: CHAH FIROOZEH COPPER DEPOSIT),” GEOSCIENCES, vol. 24, no. 93, pp. 53–66, 2014, [Online]. Available: https://sid.ir/paper/32075/en

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