Description of rocks and minerals found in Minnesota
Suggested Citation
Schwartz, G.M.; Theil, G.A..
(1958).
Guide to the Minerals and Rocks of Minnesota.
Minnesota Geological Survey.
Retrieved from the University of Minnesota Digital Conservancy,
http://purl.umn.edu/122786.
Content distributed via the University of Minnesota's Digital
Conservancy may be subject to additional license and use
restrictions applied by the depositor.
