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Vernon Co., Wisconsin, USA

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Typical Vernon County Quarry

Vernon Co., Wisconsin, USA
Typical Vernon County Quarry

Vernon Co., Wisconsin, USA
Typical Vernon County Quarry

Vernon Co., Wisconsin, USA
 
 
The bedrock in Vernon County is Cambrian to Ordovician sedimentary rocks, primarily clean quartz sandstones, limestones, shales and dolostones. Softer Cambrian sandstone underlie valleys, with the more resistant Ordovician rocks holding up highlands. The area is in Wisconsin's "Driftless Area", meaning it apparently missed glaciation during the Pleistocene. River processes have pleasantly carved the landscape into a series of high hills ("mounds") and deep valleys ("coulees"). Scenic bluffs line the Wisconsin and Mississippi River Valleys. Driving the "Great River Road" (Highway 35) as it wends its way along the Mississippi is a great way to enjoy this country.

The carbonate rocks are often quarried, and can yield samples of calcite, dolomite, quartz and marcasite. A few small copper deposits are known from the dolostones, and are likely fringe deposits of the Upper Mississippi Valley Zinc-Lead district further to the south.

Even though in the Driftless Area, deposits from rivers draining glaciated areas to the north and east hold the promise of finding drift copper, "Lake Superior" agates and other minerals in outwash.

Mineral List

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


5 entries listed. 5 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

Heyl, A. & West, W. (1982) Outlying mineral occurrences related to the Upper Mississippi Valley Mineral District, Wisconsin, Iowa, Illinois, and Minnesota: Economic Geology: 77(8): 1803-1817.

Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.

External Links

Wisconsin Mineral index - Wisconsin Geological and Natural History Survey http://wgnhs.uwex.edu/wisconsin-geology/minerals-wisconsin/

Mineral and/or Locality  
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