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Chippewa Co., Wisconsin, USA

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Location is approximate, estimate based on other nearby localities.
Latitude & Longitude (WGS84): 44° 55' 59'' North , 91° 19' 59'' West (est.)
Margin of Error:~0km

Chippewa County is underlain mostly by Cambrian sandstones. Complex Precambrian rocks, including gneiss, amphibolites and granites are exposed along the Chippewa River and its tributaries. These rocks show graphically the effects of the Penokean Orogeny which occurred about 1.80 billion years ago. A few Keweenawan (1.1 billion year old) intrusions cut these rocks, as are well exposed at Wissota Dam near Chippewa Falls. Flambeau Ridge, on the northern edge of the County, is a folded outlier of Proterozoic quartzite and meta-conglomerate. The northern part of the County is covered by young Wisconsinan drift of the Chippewa Moraine. A major segment of Wisconsin's Ice Age Trial passes through the County, and includes an excellent visitor center devoted to Wisconsin's glacial heritage. The southern part of the county was not glaciated as recently, hence Cambrian bedrock crops out more frequently. Glacial drift in the County can provide some interesting samples to the diligent collector, including "float" copper, banded iron formation and "Lake Superior" agates.

Mineral List

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

11 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.


Myers, P.E. , M. Cummings & S. Wurdinger, (1980) Precambrian Geology of the Chippewa Valley, Wisconsin: field guide: Guidebook 26th annual meeting, Institute on Lake Superior Geology, 123 p.

Laberge, G. L. & P. Myers (1984) Two early Proterozoic successions in central Wisconsin and their tectonic significance: Geological Society of America Bulletin: 95: 246-253.

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

External Links

Wisconsin Mineral index - Wisconsin Geological and Natural History Survey

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