{"title":"Iron and Manganese Mineralization Associated with Archean Greenstone Belt in Joda-Noamundi Sector, Odisha, East Indian Shield","authors":"R. Ghosh, D. Chakraborty, M. Halder, T. K. Baidya","doi":"10.11648/J.EARTH.S.2015040401.13","DOIUrl":null,"url":null,"abstract":"Iron and manganese mineralization in the Joda-Noamundi sector is associated with Banded Iron Formation of the Archean Iron Ore Group of rocks (3.5-3.0 Ga).Both Mn and Fe mineralization is stratiform and stratabound. In the Noamundi basin the estimated reserve of Fe and Mn -ores are 3.3 Gt and 130 Mt respectively. The Fe and Mn-mineralization are also genetically related to each other. A detailed petrology, mineralogy and mineral chemistry of the ores show their evolution with respect to different tectonic phases. During the first phase of deformation and metamorphism Fe-protolith generated magnetite and Mn-protolth generated bixbyite, hausmannite, jacobsite and braunite. During second phase martitized magnetite and hematite in Fe-ore and hollandite, psilomelane and pyrolusite in Mn-ore were generated. During supergene events low temperature higher oxide minerals were generated from the metamorphic and hydrothermal Fe and Mn –ore minerals. The stratigraphic status of the Fe- and Mn- ores with respect to crustal evolution has been established","PeriodicalId":350455,"journal":{"name":"Eearth","volume":"62 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Eearth","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.11648/J.EARTH.S.2015040401.13","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
Iron and manganese mineralization in the Joda-Noamundi sector is associated with Banded Iron Formation of the Archean Iron Ore Group of rocks (3.5-3.0 Ga).Both Mn and Fe mineralization is stratiform and stratabound. In the Noamundi basin the estimated reserve of Fe and Mn -ores are 3.3 Gt and 130 Mt respectively. The Fe and Mn-mineralization are also genetically related to each other. A detailed petrology, mineralogy and mineral chemistry of the ores show their evolution with respect to different tectonic phases. During the first phase of deformation and metamorphism Fe-protolith generated magnetite and Mn-protolth generated bixbyite, hausmannite, jacobsite and braunite. During second phase martitized magnetite and hematite in Fe-ore and hollandite, psilomelane and pyrolusite in Mn-ore were generated. During supergene events low temperature higher oxide minerals were generated from the metamorphic and hydrothermal Fe and Mn –ore minerals. The stratigraphic status of the Fe- and Mn- ores with respect to crustal evolution has been established
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