Native Copper

About Native Copper

Native copper — copper occurring in its pure metallic form rather than in a mineral compound — is one of the most visually striking and historically significant materials in any mineral collection. Our native copper specimens feature the distinctive reddish-orange metallic surfaces, dendritic growths, and crystallized formations that make this native element a perennial collector favorite. Native copper forms in the oxidation zones of copper deposits where chemical conditions favor the deposition of pure metallic copper rather than copper sulfide or copper carbonate minerals. Michigan's Keweenaw Peninsula produced the world's most famous native copper specimens — some weighing many tons — from ancient flood basalt lava flows where copper filled gas cavities and fractures. Chinese deposits also produce excellent crystallized native copper specimens with dendritic and wire-like crystal forms. Native copper has a Mohs hardness of 2.5-3 and is quite malleable, which means it can be easily scratched or deformed. Handle specimens carefully and display them in enclosed cases. Over time, copper naturally develops a dark oxide patina — some collectors preserve the bright metallic surface with Renaissance Wax or similar coatings, while others prefer the natural aged appearance. Browse our native copper specimens to add this important native element to your mineral collection.