Petrography and Mineralography of Emarat Lead and Zinc Deposit (South Arak)
- 1 Department of Geology, Sciences and Research Branch, Islamic Azad University, Tehran, Iran
- 2 Department of Geology, North Tehran Branch, Islamic Azad University, Tehran, Iran
- 3 Departement of Geology, Payam Noor University, Arak Branch, Arak, Iran
- 4 Department of Geology, Sciences and Research Branch, Islamic Azad University, Tehran, Iran
Abstract
Iran is host to more than 285 zinc and lead carbonated host deposits including world-class deposits such as Mehdi Abad and Irankouh. Emarat deposit is located in Sanandaj-Sirjan zone and Malayer-Isfahan metallogenic province (northwestern part of Sanandaj-Sirjan tectonic zone). In the area, the mineralization has stratabound shape and restricted to Early Cretaceous limestones and dolomites. With investigation of the optical properties in microscopic survey and evaluation results of analysis, sphalerite, galena, pyrite and chalcopyrite were recognized as the main minerals, covellite, tennantite-tetrahydrite and serosities, quartz and barite as the secondary minerals and gyps, smithsonite were recognized as the minorminerals in the samples. Silicification alteration acted as major process in studied de p o s it and dolomitization , pyritization and hematitization also were observed in the deposit. Evidences show that mineralization has occurred in post diagenetic stage (epigenetic type) and after tectonic influence.
- Adaabi, M. and Jamalian, M. (2007) Identifying the Primary Mineralogical Composition and Mineralization of Robat Carbonate Deposits (Khmeyn-Arak). Journal of Earth Sciences, No. 66, 23.
- Aqanbati (2004) Geology of Iran. Geological Survey of Iran, Tehran, 606 p.
- Aliabadi, M.A. (2000) Investigation of Geology, Mineralogy and Origin of Lead-Silver Ravnj of Delijan. MA Thesis, Shiraz University, Shiraz, 207 p.
- Ehya, F. (2009) Investigating the Sphalerite Geochemistry and Geothermometry in Emarat Lead and Zinc Deposit with Carbonated Host Rock. Journal of Applied Geology.
- Faraji, K. (2009) Exploitation Plan of Emarat Lead and Zinc Deposit: A Report by Shahin. Industrial and Mining Company, Iran, 30 p.
- Fazli, S., Shamaniyan, GH. and Shafiei, B. (2011) Sulfur Isotopic Change in Sulphide Minerals of Emarat and Mouchan Lead and Zinc Deposits, Southwest of Arak. The First Congress on Economic Geology of Iran, Ferdowsi University of Mashhad, Khorasan Razavi.
- Ghazban, F., Mcnutt, R.H. and Schwarcz, H.P. (1994) Genesis of Sediment-Hosted Zn-Pb-Ba Deposits in the Irankuh District, Esfahan Area, West-CentralIran. Economic Geology, 89, 1262-1278. http://dx.doi.org/10.2113/gsecongeo.89.6.1262
- Krimpour, M.H. and Saadat, S. (2004) Applied Economic Geology. Mashhad University Press, Mashhad.
- Mohajjel, M., Fergusson, C.L. and Sahandic, M.R. (2003) Cretaceous-Tertiary Convergence and Continental Collision Sanandaj-Sirjan Zone, Western Iran. Journal of Asian Earth Sciences, 21, 397-412. http://dx.doi.org/10.1016/S1367-9120(02)00035-4
- Khosrow Tehrani, K. and Darvishzadeh, A. (1984) Geology for Experimental Sciences. Students and Teachers Training Centers, Tehran, 234 p.
- Momenzadeh, M., Shafighi, S., Rastad, E. and Amstutz, G.C. (1979) The Ahangaran Lead-Silvardeposit, SE-Malayer, West Central Iran. Mineralium Deposita, 3, 323-341.
- Momenzadeh, M. (1976) Stratabound Lead Zincores in the Lower Cretaceous and Jurassic Sediments in the Malayer-Esfahan District (Westcentral Iran), Lithology, Metal Content, Zonationand Genesis. Ph.D. Thesis, Heidelberg University, Heidelberg, 300 p.
- Radfar, C. and Kohansal, R. (2004) 1: 100,000 Geologic Map of Arak. Geological Survey of Iran.
- Rahimpour-Bonab, H. (1991) A study of Southern Arak (Emarat) Lead and Zinc Deposits. MA Thesis, Tehran University, Tehran, 185 p.