Abstract
The Narigun area is located in Central Iran. Presence of Narigun granite as a source of mineralization and occurrence of faults systems in surrounding tuffs makes favorable condition to form polymetallic veins around the granitic pluton in brecciated zones. Major hydrothermal alterations around mineralized veins are: silicification, argillitization, carbonatization, and potassic alteration. The metallic mineral assemblage in the veins mainly consist of arsenides and sulpharsenides like nickeline and arsenopyrite, three generations of sulfides, including molybdenite, sphalerite, pyrite, and uranium mineralization as uraninite. Hydrothermal fluids formed veins with high U, Ni, Co, Ag, and As content veins and caused related sericitization and carbonatization in the wall rocks. Secondary boiling in hydrothermal fluids caused by decrease of pressure in tectonized zones led to precipitation of metals in the veins. The main characteristics of Narigun veins including mineral paragenesis, alteration, and regional tectonic control, show that it belongs to granite-related, poly-metallic vein type deposits.
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Gharesi, M., Karimi, M. (2012). Vein Type Mineralization and Related Alterations of Narigun Polymetallic Deposit, East of Yazd, Central Iran. In: Broekmans, M. (eds) Proceedings of the 10th International Congress for Applied Mineralogy (ICAM). Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27682-8_29
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DOI: https://doi.org/10.1007/978-3-642-27682-8_29
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