Native Copper

Superb group of very sharp, twinned Native Copper crystals from the famous Central mine in Michigan’s Keweenaw Peninsula. The perfection of the copper crystals (showing a combination of cubic and tetrahexahedral forms) and their stacked, branching arrangement make this an exceptional Michigan copper. From the noted collections of the A.E. Seaman Museum (with label) and the collection of Martin Zinn III. Classic!!