Copper

Native Copper, Keweenaw Peninsula, Michigan
Sample 223

Native Copper, Keweenaw Peninsula, Michigan
Sample 240B&D

Native Copper, Upper Peninsula, Michigan
Sample 2802

Copper, Dendritic structure in Selenite crystal, Roland, Colorado
Sample 2886

Graphite

Graphite in Diopside, Willsboro, New York
Sample 2805

Silver/Copper

Half Breed Silver and Copper Nugget, Keweenaw Peninsula, Michigan
Sample 232

Silver

Native Silver, Keweenaw Peninsula, Michigan
Sample 783

Native Silver, British Columbia
Sample 784