Some of Minnesota's natural resources are: birds, fish, clean water, forests, lumber, rocks and minerals (especially taconite and iron ore). Powered by Create your own unique website with customizable templates. More specific tests for minerals include reaction to acid, magnetism, taste or smell, and radioactivity. At least 22 of the 50 states have designated an official state mineral. Also, a state's official state rock may be a mineral, just as one of the minerals in this list is actually a rock.
The Minnesota Geological Survey was established in 1873 and headed by Newton Winchell, who taught in the winter and conducted surveys during the summer months. Two of his students, young professors from the University of Minnesota, S.F. Peckman and C.W. Hall, spent their vacation in 1879 along the north shore of Lake Superior studying rocks.