Geology and geochemistry of the Shurab Kabir Mn mineralization, north Shahrekord, Sanandaj-Sirjan Zone


Department of Geology, Faculty of Science, Payame Noor University, Iran


Shurab Kabir manganese deposit is located 60 km northeast of Shahrekord, the center part of Sanandaj-Sirjan zone. The oldest rocks include metamorphic shale, sandstone, limestone and dolomites of Permian. Permian units have been thrusted on the younger units (Jurassic shale, sandstone, and conglomerates with andesitic intercalation) by trust faults. Mineralization has occurred at sedimentary and metamorphic units as veins, masses and stockwork. The mineralization contains pyrolusite, psilomelane, manganite and goethite, hematite, magnetite with calcite and quartz. Alterations is carbonate and siliceous. The primitive mantle normalized pattern of REE indicates negative Ce anomaly due to oxidation and acidic environment, and a weak negative Eu anomaly due to the distance of hydrothermal fluid from the origin. also primitive mantle normalized pattern of elements of the studied samples show enrichment of Ba, La, Sr, Pb and depletion of Ti, Nb, Rb, Ce and Nb. All of data, field, microscopic and geochemical data indicate hydrothermal fluids for formation Shurab Kabir Mn deposit.


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