Native Copper

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Michigan Native Copper Michigan's Keweenaw Peninsula is considered the most important locality in the world for pure native copper Mining began in 1845 and continued through 1982, and over 7 million tons of refined copper were recovered from the mines. At the turn of the 20th century it led the world in copper production and "Lake Copper" was the purity standard. The chemical symbol for copper is Cu. Size range is approximately 2 - 3 inches in length. Please Note: This listing is for one piece. If you would like more than one, please adjust the quantity in your cart. The pieces of copper photographed are representative of the material and may not be the exact pieces you receive. Show more