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Racine Co., Wisconsin, USA

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Racine County is underlain by Silurian sedimentary rocks, primarily dolostones. Quarries can yield some well-crystallized specimens, such as the find of smoky calcite, marcasite and other minerals at the Vulcan Materials Corporation (classically the Ives)Quarry near Racine. Exposures of this rock can yield interesting Silurian fossils from reefs and associated environments. Thick glacial sediments obscure the bedrock in most places. At least one "drift diamond" has been found in the county (Burlington). Beach combing along Lake Michigan's shore can provide interesting samples of local and glacially transported rocks.

Mineral List

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

11 entries listed. 9 valid minerals.

Localities in this Region

The above list contains all mineral locality references listed on 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 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.


Cook, C. (1924) Marcasite from the Racine dolomite, Racine, Wisconsin: American Mineralogist: 9: 151-152.

Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399

Dott, Robert H. & J.W. Attig, (2004) Roadside Geology of Wisconsin, Mountain Press, 345 p.

External Links

Wisconsin Mineral index - Wisconsin Geological and Natural History Survey

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