Several faults originally of Keweenawan age, but reactived in post-Ordovician time, shift Cambrian and Ordovician strata. The most notable is the Hastings - Hudson Fault, traceable near Hudson and through Willow River State Park.
The Wisconsinan St. Croix moraine cuts through the county near the Interstate 94 corridor. The landscape south of there is bedrock dominated with only thin older glacial drift. North of the interstate the terrain is dominated by glacial landforms. Interesting materials can be found in the glacial drift including iron formation, float copper, jasper and "Lake Superior" agates.
Mineral ListMineral list contains entries from the region specified including sub-localities
9 entries listed. 8 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.
Dott, R. & J. Attig (2004) Roadside Geology of Wisconsin: Mountain Press, 346 p.
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Locality Updated: Copper Mountain prospect, Barton Peak, Tulare Co., California, USAFrom Chester S. Lemanski, Jr., 13th Dec 2013 16:35:13