The South Faizuly manganese deposit in the southern Urals: Geology,petrography, and formation conditions |
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| Authors: | A I Brusnitsyn I G Zhukov |
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| Institution: | (1) Geological Faculty, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia;(2) Institute of Mineralogy, Ural Division, Russian Academy of Sciences, 456317 Miass, Chelyabinsk oblast, Russia |
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| Abstract: | The South Faizuly manganese deposit hosted in cherty rocks of the Magnitogorsk paleovolcanic belt has been studied. The geology, mineralogy, and chemistry of ores and host silicites (jasperites, jaspers, and cherty siltstones) are characterized. The deposit was formed in the following four consecutive stages: (1) sedimentation and diagenesis of ore-bearing sediments in the Middle Devonian, (2) metagenesis of Mn-bearing rocks in the Middle Devonian-Early Carboniferous, (3) hydrothermal-metasomatic stringer ore mineralization during tectonic deformation of volcanosedimentary rocks in the Middle Carboniferous-Permian, and (4) supergene alteration and partial denudation of the deposit in the Mesozoic-Quaternary. Models of Mn-bearing rock deposition in the proximal and distal zones of the hydrothermal solution discharge area are considered.Translated from Litologiya i Poleznye Iskopaemye, No. 1, 2005, pp. 35–55.Original Russian Text Copyright 2005 by Brusnitsyn, Zhukov. |
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