Keweenaw Peninsula, Michigan, USA

Copper is one of the few metallic elements to occur in native form, although it most commonly occurs mixed with other elements. The mines of the Keweenaw native copper deposits of Upper Michigan were major copper producers in the 19th and early 20th centuries, and are the largest deposits of native copper in the world. Here is your chance to own a nice large showy specimen of native copper.

5.75 x 2.4 x 1 inches