Copper - MICU3.0
Michigan Native Copper Specimen, White Pine Mine
12" (across) / 3 lbs
The oldest and largest lava flow known on Earth is located in the Keweenaw Peninsula of Michigan. This volcanic activity produced the only place on the planet where large scale economically recoverable 97% pure native copper is found. Production ceased in the mid-1990s, but the region still holds some of the purest specimens in the world. This specimen contains shale (black), barite (white), and calcite crystal impressions. Locality: White Pine Mine, near the old Nonesuch Mine, in Ontonagon County, Michigan.