Native Copper Slab - 24 pc lot Other Agates This specimen features purple agate

This specimen features purple agate with a large

Images show the slabs wet and dry

They are a unique formation of agate

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emotional and physical effects

Native Copper Slab - 24 pc lot Other Agates This specimen features purple agateNative Copper Slab Native Michigan copper slabs feature copper rich ore with quartz, basalt, epidote, and calcite coated with a thin coat of epoxy to prevent oxidation. The chemical symbol for copper is Cu. 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