Copper
Unknown Owner
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A striking and classic copper specimen from the Champion Mine of Michigan's famed Copper Country. Fabulous, dendtritic groupings of spinel-twinned copper crystals spring upward from a single long "backbone" of arching spinel-twinned copper. The large, 4.5 cm, doubly terminated crystal group at the end is particularly striking. The crystals have a nice patina, which in some places is further accented with a red cuprite coating. This form of copper crystals was classified as Type I branching by Dana in 1886. The historic Champion Mine operated from 1902 to 1967 and this is probably an old-time specimen.
Product details
Known provenance
| Date | Collector | Acquisition price |
|---|---|---|
| 08/2024 | Unknown Owner | Not disclosed |
| — | The Arkenstone | Not disclosed |
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Mineral guide
Learn about Copper
native copper with spinel-twinned crystals and arborescences; notable from Lake Superior, Itauz, Dongchuan, Corocoro, prized for color and localities.Regional guide
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