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Fond du Lac Co., Wisconsin, USA

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Fond du Lac County is underlain by Ordovician to Silurian sedimentary rocks, which are found in scattered outcrops. The carbonate rocks are often quarried when found, and can provide calcite, quartz, marcasite, pyrite and other minerals in small crystals. Most of the County is covered by thick deposits of glacial drift. These can, from time to time, yield interesting minerals such as "drift" copper nuggets. They also show excellent continental glacial landforms, such as seen along the Ice Age National Scenic trials and Kettle Moraine State forest. The Henry S. Ruess Ice Age Interpretative Center has excellent displays and programs on this phase of Wisconsin's history.

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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

Newport, T.G. (1962) Geology and ground-water resources of Fond du Lac County, Wisconsin: U.S. Geological Survey Water-Supply Paper 1604, 52 p.

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

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