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Float copper large nugget, pictured from above. The top side is polished and sealed to prevent further oxidation.
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. Float Copper has been naturally tumbled and formed through glacial activity. The chemical symbol for copper is Cu.
5.25" x 4.25" x 1"
2 lb 6.7 oz