Mindat Logo

Jefferson Co., Wisconsin, USA

Jefferson County is underlain by Ordovician sedimentary rocks, primarily sandstone and dolostones. A few inliers of Precambrian quartzite occur in the northern part of the county, and are quarried just north of the County line in adjacent Dodge County. Glacial sediments, forming world-class landforms such as drumlins, obscure the bedrock in many places, but can yield interesting specimens from the drift.

Mineral List

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

2 entries listed. 2 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.
This page is currently not sponsored. To sponsor this page click here.

Mineral and/or Locality  
Search Google  
Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
Current server date and time: November 24, 2014 16:18:22 Page generated: December 8, 2013 05:04:44