Maps showing the location of the Caledonia Native Copper Mine
near Ontonagon in the Upper Peninsula of Michigan


Geologic Map of the Mass-Ontonagon-Houghton area showing the location of the Caledonia Mine


Rock and Mineral Collecting at the Caledonia Copper Mine




Ontonagon Michigan
Copper Mining and Short History
Upper Peninsula Towns and Cities
Adventures in the Upper Peninsula
Rock Collecting in the Western Upper Peninsula
The Upper Peninsula Traveler
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