自然銅
Cu
Native Copper is a native element mineral known for its striking metallic crystals, with several world-class Chinese localities.
Native copper — the metal, uncut
Native copper is elemental copper as nature deposits it: branching arborescent growths, wiry dendrites, and clusters of distorted cubic crystals, all with the unmistakable salmon-pink metallic color where freshly exposed. It was one of the first metals humans ever worked, precisely because it occurs ready-made.
Our material
Our specimens come from the copper systems of Jiangxi Province, China — arborescent growths and crystal clusters, including pieces from the Yichun mining area. Historically the species is most associated with Michigan's Keweenaw Peninsula, whose glacier-scattered "float copper" built a 19th-century mining boom.
Display notes
Copper tarnishes: expect surfaces to deepen toward brown-red over time, and keep pieces dry — humidity accelerates green carbonate patina. Some collectors prize the patina; purists keep a sealed display case with desiccant.
From our inventory
See the Jiangxi locality page for our native copper and its companion sulfides.
現有標本
Red Native Copper — Jiangxi, China
自然銅樹枝狀標本 – 中國江西
自然銅塊 – 天然礦物雕塑 – 江西
自然銅晶簇 – 中國江西
