Hashemi Marand, Gholamreza, Jafari, Mohammadreza, Afzal, Peyman, Khakzad, Ahmad. (1396). Determination of relationship between silver and lead mineralization based on fractal modeling in Mehdiabad Zn-Pb-Ag deposit, Central Iran. فصلنامه علمی-پژوهشی علوم زمین, 27(Special Journal-106), 111-118. doi: 10.22071/gsj.2018.58371
Gholamreza Hashemi Marand; Mohammadreza Jafari; Peyman Afzal; Ahmad Khakzad. "Determination of relationship between silver and lead mineralization based on fractal modeling in Mehdiabad Zn-Pb-Ag deposit, Central Iran". فصلنامه علمی-پژوهشی علوم زمین, 27, Special Journal-106, 1396, 111-118. doi: 10.22071/gsj.2018.58371
Hashemi Marand, Gholamreza, Jafari, Mohammadreza, Afzal, Peyman, Khakzad, Ahmad. (1396). 'Determination of relationship between silver and lead mineralization based on fractal modeling in Mehdiabad Zn-Pb-Ag deposit, Central Iran', فصلنامه علمی-پژوهشی علوم زمین, 27(Special Journal-106), pp. 111-118. doi: 10.22071/gsj.2018.58371
Hashemi Marand, Gholamreza, Jafari, Mohammadreza, Afzal, Peyman, Khakzad, Ahmad. Determination of relationship between silver and lead mineralization based on fractal modeling in Mehdiabad Zn-Pb-Ag deposit, Central Iran. فصلنامه علمی-پژوهشی علوم زمین, 1396; 27(Special Journal-106): 111-118. doi: 10.22071/gsj.2018.58371
Determination of relationship between silver and lead mineralization based on fractal modeling in Mehdiabad Zn-Pb-Ag deposit, Central Iran
1Ph.D. Student, Department of Geology, Islamic Azad University, North Tehran Branch, Tehran, Iran
2Assistant Professor, Department of Geology, Islamic Azad University, North Tehran Branch, Tehran, Iran
3Associate Professor, Department of Mining Engineering, Islamic Azad University, South Tehran Branch, Tehran, Iran
4Professor, Department of Geology, Islamic Azad University, North Tehran Branch, Tehran, Iran
چکیده
Main aim of this study is to determine relationship between lead and silver mineralized zones using the Concentration-Volume (C-V) fractal modeling and logratio matrix based on subsurface data in Mehdiabad Zn-Pb-Ag deposit, central Iran. First, Pb and Ag raw data were analyzed by statistical processes and their histogram have similar shape. Next, Geostatistical modeling was carried out for the Pb and Ag data and their distributions were estimated by ordinary kriging. Then, the C-V log-log plots were created for the Pb and Ag which show five populations as mineralized zones for both of them. Moreover, correlation between the Pb and Ag different mineralized zones were calculated by the logratio matrix. Overall accuracies (OAs) are higher than 90% for enriched and highly mineralized zones of these elements. However, these zones were validated with geological particulars which indicate that oxidized mineralization is situated in Black Hill (gossan) and Calamine mine and silver was enriched in cerussites. Results obtained by the fractal modeling represent that the main mineralization for Pb and Ag occur in the central and NW part of the Mehdiabad deposit especially in the oxidized mineralization.
Determination of relationship between silver and lead mineralization based on fractal modeling in Mehdiabad Zn-Pb-Ag deposit, Central Iran
نویسندگان [English]
Gholamreza Hashemi Marand1؛ Mohammadreza Jafari2؛ Peyman Afzal3؛ Ahmad Khakzad4
1Ph.D. Student, Department of Geology, Islamic Azad University, North Tehran Branch, Tehran, Iran
2Assistant Professor, Department of Geology, Islamic Azad University, North Tehran Branch, Tehran, Iran
3Associate Professor, Department of Mining Engineering, Islamic Azad University, South Tehran Branch, Tehran, Iran
4Professor, Department of Geology, Islamic Azad University, North Tehran Branch, Tehran, Iran
چکیده [English]
Main aim of this study is to determine relationship between lead and silver mineralized zones using the Concentration-Volume (C-V) fractal modeling and logratio matrix based on subsurface data in Mehdiabad Zn-Pb-Ag deposit, central Iran. First, Pb and Ag raw data were analyzed by statistical processes and their histogram have similar shape. Next, Geostatistical modeling was carried out for the Pb and Ag data and their distributions were estimated by ordinary kriging. Then, the C-V log-log plots were created for the Pb and Ag which show five populations as mineralized zones for both of them. Moreover, correlation between the Pb and Ag different mineralized zones were calculated by the logratio matrix. Overall accuracies (OAs) are higher than 90% for enriched and highly mineralized zones of these elements. However, these zones were validated with geological particulars which indicate that oxidized mineralization is situated in Black Hill (gossan) and Calamine mine and silver was enriched in cerussites. Results obtained by the fractal modeling represent that the main mineralization for Pb and Ag occur in the central and NW part of the Mehdiabad deposit especially in the oxidized mineralization.
کلیدواژهها [English]
Concentration-Volume (C-V) fractal model, Logratio matrix, Mehdiabad Zn-Pb-Ag deposit, Pb and Ag mineralized zones
مراجع
References
Afzal, P., Ahmadi, K. and Rahbar, K., 2017- Application of fractal-wavelet analysis for separation of geochemical anomalies. Journal of African Earth Sciences 128, 27-36.
Afzal, P., Fadakar Alghalandis, Y., Khakzad, A., Moarefvand, P. and Rashidnejad Omran, N., 2011- Delineation of mineralization zones in porphyry Cu deposits by fractal concentration-volume modeling, Journal of Geochemical Exploration, v. 108, p. 220-232.
Afzal, P., Fadakar Alghalandis, Y., Khakzad, A., Moarefvand, P., Rashidnejad Omran, N. and Asadi Haroni, H., 2012- Application of power spectrum- volume fractal method for detecting hypogene, supergene enrichment, leached and barren zones in Kahang Cu porphyry deposit, Central Iran. J. Geochem Explor. 112, 131e138.
Agterberg, F. P., 1995- Multifractal modeling of the sizes and grades of giant and supergiant deposits. Int. Geol. Rev. 37, 1-8.
Boni, M., 2014- Supergene Nonsulfide Zinc Ores State of the Art, Abstract at 21st General Meeting of the International Mineralogical Association, Sandton South Africa.
Borg, G., 2005- Geological and economical significance of supergene nonsulphide zinc deposits in Iran and their exploration potential Geological Survey of Iran (Ed.), Mining and Sustainable Development. 20th World Mining Congress, 7–11 November 2005, Tehran, Iran, pp. 385-390
Borg, G., 2009- The influence of fault structures on the genesis of supergene zinc deposits Society of Economic Geologists Special Publication, 14, pp. 121-132.
Borg, G., 2015- A review of supergene nonsulphide zinc (SNSZ) deposits - the 2014 update Archibald, S.M., Piercey, S.J., (Eds.), Current Perspectives of Zinc Deposits, Irish Association for Economic Geology, Dublin, pp. 123-147.
Carranza, E. J. M., 2011- Analysis and mapping of geochemical anomalies using logratio-transformed stream sediment data with censored values, Journal of Geochemical Exploration, v. 110, p. 167-185.
Chen, G. and Cheng, Q., 2016- Singularity analysis based on wavelet transform of fractal measures for identifying geochemical anomaly in mineral exploration. Comp.Geosci. 87, 56-66.
Cheng, Q., Agterberg, F. P. and Ballantyne, S. B., 1994- The separation of geochemical anomalies from background by fractal methods. J. Geochem. Explor 51, 109-130.
Cheng, Q., Xu, Y. and Grunsky, E., 1999- Integrated spatial and spectral analysis for geochemical anomaly separation. In: Lippard, S.J., Naess, A., Sinding-Larsen, R. (Eds.), Proc. of the Conference of the International Association for Mathematical Geology, vol. 1, pp. 87e92. Trondheim, Norway.
Davis, J. C., 2002- Statistics and Data Analysis in Geology, 3th ed. John Wiley & Sons Inc, New York.
Delavar, S. T., Afzal, P., Borg, G., Rasa, I., Lotfi, M. and Rashidnejad Omran, N., 2012- Delineation of mineralization zones using concentration-volume fractal method in Pb–Zn Carbonate hosted deposits. Journal of Geochemical Exploration, Journal of Geochemical Exploration 118, 98–110.
Hitzman, M. H., Reynolds, N. A., Sangster, D. F., Allen, C. R. and Carman, C. E., 2003- Classification, genesis, and exploration guides for nonsulphide zinc deposits Economic Geology 98, 685-714.
Leach, D. L., Bradley, D. C., Huston, D., Pisarevsky, S. A., Taylor, R. D. and Gardoll, S. J., 2010- Sediment-hosted lead-zinc deposits in earth history. Economic Geology 105, 593-625.
Li, C. J., Ma, T. H. and Shi, J. F., 2003- Application of a fractal method relating concentration and distances for separation of geochemical anomalies from background. J. Geochem Explor 77, 167-175.
Maghfouri, S., 2017- Geology, Geochemistry, Ore Controlling Parameters and Genesis of Early Cretaceous Carbonate-clastic Hosted Zn-Pb Deposits in Southern Yazd Basin, with Emphasis on Mehdiabad Deposit (Unpublished Ph.D. Thesis), Tabriz University, Iran, p. 475
Maghfouri, S., Hosseinzadeh, M. R., Rajabi, A. and Choulet, F., 2017- A review of major non-sulfide zinc deposits in Iran. Geoscience Frontiers (In press).
Maghfouri, S., Hosseinzadeh, M. R., Rajabi, A., Azimzadeh, A. M. and Choulet, F., 2015- Geology and Origin of Mineralization in the Mehdiabad Zn-Pb-Ba (Cu) Deposit, Yazd Block, Central Iran. 13th SGA biennial meeting, Nancy-France.
Majidifard, M. R., 1996- Stratigraphy, fossils and environment of Early Cretaceous rocks from the northern hills of Shirkuh Geological Survey of Iran, Earth Science, 20 (1996), pp. 2-31 (in Persian with English abstract).
Mandelbrot, B. B., 1983- The Fractal Geometry of Nature. Freeman, San Fransisco, 468 p.
Nabavi, M., 1972- Early Cretaceous Deposits in the Taft-Yazd and Khur area. Geological Survey of Iran, Report 106, pp. 1-127.
Rajabi, A., Canet, C., Rastad, E. and Alfonso, P., 2015- Basin evolution and stratigraphic correlation of sedimentary-exhalative Zn–Pb deposits of the Early Cambrian Zarigan–Chahmir Basin, Central Iran. Ore Geology Reviews 64, 328-353.
Rajabi, A., Rastad, E., Alfonso, P. and Canet, C., 2012- Geology, ore facies and sulfur isotopes of the Koushk vent-proximal sedimentary-exhalative deposit, Posht-e-Badam block, Central Iran. International Geology Review 54, 1635-1648.
Zuo, R., Wang, J., Chen, G. and Yang, M., 2015- Identification of weak anomalies: a multifractal perspective. J. Geochem. Explor. 148, 12-24.
ابتدای صفحه