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Indiana, USA

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Sediments of late Ordovician, Silurian, Devonian, Mississippian, and Pennsylvanian ages form the bedrock surface of Indiana. Structural high areas are in the southeastern portion of the state (Cincinnati arch) and the northern portion of the state. Igneous and metamorphic rocks are only known by drilling to the buried Precambrian bedrock. Up to 550 feet of glacial drift material covers 3/4ths of the state.

Occurrences of native copper, diamonds (~30 stones), gold and galena are derived from glacial deposits. Many other reports of igneous and metamorphic minerals are from assessments of heavy minerals from Ohio River and other sediments (see Switzerland County, for example).

Mineral List

Mineral list contains entries from the region specified including sub-localities


141 entries listed. 85 valid minerals. 1 (TL) - type locality of valid minerals.

Localities in this Region


The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Erd, R. C. and S.S. Greenburg (1960) Minerals of Indiana. Indiana Geological Survey Bulletin 18 73pp

Huizing, T. & R. Russell (1986) Indiana Minerals: A locality index: Rocks and Minerals:61 (3): 136- 151.
Note: that entire issue of Rocks and Minerals is devoted to Indiana rocks, minerals and fossils.

Camp, Mark & G. T. Richardson (2003) Roadside geology of Indiana: Mountain Press, 326 p.

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Mineral and/or Locality  
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