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|Location is approximate, based on center of defined region.|
|Latitude & Longitude (WGS84):||44° North , 92° West (est.)|
Pierce County is underlain by Cambrian and Ordovician strata, primarily quartz sandstones and dolomitic carbonates. A few isolated outcrops of non-marine Cretaceous strata are known. There is a relatively thin cap of glacial drift left by earlier Pleistocene glaciations. An Ordovician meteor impact structure, the Rock Elm Disturbance, occurs in the eastern part of the County in and north of Nugget Lake County Park. Drusy quartz, dolomite, calcite and goethite pseudomorphs after pyrite occur often in dolostone quarries and outcrops. Crystal Cave in Spring Valley is a significant commercial cave developed in the Ordovician Prairie du Chien Group dolostones and displays speleothems as well as the durst quartz in bugs that give the cave its name. A few small iron oxide ore deposits were mined from likely Cretaceous lag deposits on top of Ordovician carbonate rocks. The glacial drift hosts a variety of minerals, including drift gold, copper and diamonds, septaria nodules, jasper, banded iron formation and, of course, Lake Superior agates. Several geology displays can be found in the Agriculture and Science Hall on the University of Wisconsin - River Falls campus.
Note that some localities are named after roads. Be warned that road names in the county have been changed to numbers, with east-west roads being numbered avenues and north-south roads being numbered streets.
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded from this region.
Mineral ListMineral list contains entries from the region specified including sub-localities
17 valid minerals.
Rock Types Recorded
Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!
Rock list contains entries from the region specified including sub-localities
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
Localities in this Region
- Pierce Co.
- Bay City
- Beldenville Pass Limestone Quarry
- Bridge Road limestone deposit
- Cady Creek Iron mine
- Cady Creek quarry
- Cave Creek limestone deposit
- Christenson Quarry
- Creek Road limestone deposit
- Devils Gate limestone deposit
- Don Borst Quarry (Pierce County Highway Department)
- Donald Sears Quarry (Pierce County Highway Department)
- Gilbertson dolomite deposit
- Goose Creek clay deposit
- Grant Avenue Quarry
- Hager City dolomite deposit No. 1
- Hager City dolomite deposit No. 2
- Halverson Quarry (Pierce County Highway Department)
- Hilbert Stark limestone deposit
- Maiden Rock
- Peach Road limestone deposit
- Pechacek Quarry (Pierce County Highway Department)
- Pierce County Operations
- Pine Coulee Road limestone deposit
- Plum City
- Pierce Co.
- Pierce Co.
- Plum City
- Porcupine Creek dolomite deposit
- Prescott Quarry
- Richardson Quarry (Pierce County Highway Department)
- River Falls
- Bredahl limestone deposit
- Knollwood Road Limestone Quarry No. 1
- Knollwood Road Limestone Quarry No. 2
- Morrow Quarry
- River Falls agricultural lime site
- River Falls dolomite deposit No. 1
- River Falls dolomite deposit No. 2
- River Falls Dolomite Quarry No. 6
- Rocky Branch Creek dolomite deposit
- Scenic View Road limestone deposit
- Rock Elm
- Rush River dolomite deposit No. 1
- Rush River dolomite deposit No. 2
- Spring Valley
- Stirratt Ave limestone deposit
- Sukawaty Quarry (Pierce County Highway Department)
- Svec Quarry (Edward Kraemer and Sons; Inc.)
- Trimbelle River clay deposit
- Trimbelle River dolomite deposit
- Trimbelle River Limestone Quarry No. 1
- Trimbelle River Limestone Quarry No. 2
- Trimbelle River Limestone Quarry No. 3
- W. & K. Svoboda limestone deposit
- Washington Drive dolomite deposit
- Pierce Co.
This page 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.
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Dott, Robert H. & J.W. Attig, (2004) Roadside Geology of Wisconsin, Mountain Press, 345 p.
Cunningham, J, , H. Dolliver & W. Cordua (2011) Flaming meteors, dark caves and raging waters: geological curiosities of western Wisconsin: Miller, et. al. ed. Field guides to the geology of the Mid-Continent of North America: Geological Society of America Field Guide 24: 411-424