Document Type : Original Research Paper
Authors
1 Assistant Professor, Department of Mineral Resource & Groundwater, Faculty of Earth Sciences, Shahid Beheshti University, Tehran, Iran
2 Ph.D. Department of Economic Geology, Faculty of Basic Sciences, Tarbiat Modares University, Tehran, Iran
Abstract
The Kamyaran manganese is located in the 20 km from NW of Kamyaran and south of Kurdistan province. In geological structure map these Mn-deposite are outcrops in Zagros and northern Sanandaj-Sirjan collision zone and close to Zagros ophiolites. In this area, Mn-mineralization occurs as regular lenses and interlayers with radiolarian cherts within the Eocene radiolarite and shale. The present work has been done based on field geology, mineralogy and geochemistry characterization. Study of Mineralogy and texturally Kamyaran Mn-ores show two stage mineralization including Braunite and Okhotskite were formed singenetic and pyrolusite was formed diagenetic. The high rate of Si and rhadiolarite fossils in Mn-bearing cherts suggest that the Kamyaran Mn-deposit was formed in deep oceanic area. The Variable content of Mn/Fe and high rate of detector element such as Ba and Sr revel the hydrothermal source for mineralization. Despite, Existence rhadiolarite fossils, sub-bedding deposits and some geochemical characterization suggest the sedimentary origin for Kamyaran Mn-deposit.
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