Show simple item record Bundy, Wayne M. 2006-08-16T17:53:01Z 2006-08-16T17:53:01Z 1956-09
dc.identifier.citation Bundy, Wayne M., 1956, Iron Deposits in Southwestern Indiana. Indiana Geological Survey Report of Progress 10, 25 p., 4 fig. en
dc.identifier.issn 0097-3645
dc.description Indiana Geological Survey Report of Progress 10 en
dc.description.abstract Most of the iron deposits of Martin and Greene Counties, Ind. , are within the Mansfield formation (lower Pennsylvanian), but small deposits also occur in the Beech Creek limestone (upper Mississippian). Goethite, the major iron mineral, occurs as cementing material, concretions, bands along bedding planes, veins, irregular open-space fillings, and replacements of plants in sandstone and shale. Small replacement bodies of goethite are common in the limestone. Magnetite occurs as finely disseminated grains within the interior shells of concretions. Iron deposits in Indiana probably were precipitated in swamps and lagoons in early Pennsylvanian time. The belief that the iron was deposited in bogs is substantiated by the following evidence: (1) the irregular and local distribution of the iron deposits in Indiana is characteristic of bog iron deposits; (2) the relative abundance of those plant fossils associated with iron deposits is similar for both the iron deposits in Indiana and bog iron deposits; (3) the chemical analyses of the iron deposits in Indiana are similar to other iron deposits that are known to be of bog origin; (4) clay that is similar in composition to underclay (indicative of swamp conditions) is present in the Indiana deposits; and (5) the syngenetic nature of the concretions and the abundance of concretions of the Indiana deposits are like those of other iron deposits that are known to be of bog origin. Shrinkage cracks and colloform texture indicate that the iron was largely a colloidal precipitate. Electrolytes, micro-organisms, oxidation, and supersaturation may have been active in precipitation of the iron. Iron content is too low and phosphorus content is too high to consider the deposits in Indiana as being of commercial grade for most purposes. en
dc.description.sponsorship Indiana Department of Conservation en
dc.format.extent 1716655 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Indiana Geological Survey en
dc.relation.ispartofseries Report of Progress en
dc.relation.ispartofseries 10 en
dc.rights This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License. To view a copy of this license, visit or send a letter to Creative Commons, 543 Howard Street, 5th Floor, San Francisco, California, 94105, USA. en
dc.subject Economic Geology en
dc.subject Industrial Minerals en
dc.subject Mineral Deposits en
dc.subject Iron en
dc.subject Iron Ore en
dc.subject Pennsylvanian en
dc.subject Mississippian en
dc.subject Greene County en
dc.subject Martin County en
dc.subject Indiana en
dc.title Iron Deposits in Southwestern Indiana en
dc.type Technical Report en
dc.identifier.coden ICGPA9

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