Copper
Unknown Owner
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This amazingly sculptural Keweenaw Peninsula copper specimen has a HUGE, 7.0 cm, elongated tetrahexahedral copper crystal and overall, a very nice, rich patina. Undoubtedly old material. Ex Seaman Museum Collection. The label on the specimen bottom is DM 1864. The DM prefix on the catalog number does not stand for Dean Martalock collection, but instead was created by Jean Kemp in the 1970s, and stand for "display mineral."
Product details
SpeciesCopper
SizeSmall Cabinet
Dimensions9.0 x 4.6 x 4.5 cm
Added on10/23/2024
LocalityUSA, Michigan, Keweenaw County
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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