Black Earth lead diggings, Black Earth, Dane Co., Wisconsin, USA
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Pits in Prairie du Chien dolostones worked for galena. Known from 1829. Few if any signs of them still exist, however nearby excavations may yield interesting material.
Mineral List
3 entries listed. 3 valid minerals.
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
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References
Heyl, A. & W. West, 1982, Outlying mineral occurrences related to the Upper Mississippi Valley Mineral District, Wisconsin, Iowa, Illinois, and Minnesota, Economic Geology: 77(8):1803-1817.