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Winnebago Co., Wisconsin, USA

Winnebago County is underlain by Cambrian to Ordovician sedimentary rocks which dip gently east off the Wisconsin Arch. The Ordovician rocks are dominated by carbonates, which are widely quarried for crushed and building stone. Several quarries in the Oshkosh area, such as the Lutz Quarry, are particularly well known for well-crystallized vug minerals including calcite, marcasite, sphalerite and other minerals. Glacial drift covers much of the bedrock. Careful hunting can yield native copper nuggets, banded iron formation, jasper, "Lake Superior" agates and other interesting material from the glacial deposits. The Weis Earth Science Museum on the University of Wisconsin - Fox Valley campus in Menasha features excellent displays, with an emphasis on Wisconsin minerals and geology.

Mineral List

Mineral list contains entries from the region specified including sub-localities
Bornite
Calcite
Cerussite
Covellite
Cuprite
Dolomite
Fluorite
Galena
Goethite
Hemimorphite
Marcasite
Pyrite
Pyrolusite
Quartz
Smithsonite
Sphalerite


16 entries listed. 16 valid minerals.

Localities in this Region

USA
USA

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References

Dott, R. & J. Attig (2004) Roadside Geology of Wisconsin: Mountain Press, 346 p.

External Links

Weis Earth Science Museum http://www.uwfox.uwc.edu/wesm/

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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