Copper
Unknown Owner
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Nicely crystallized native copper coming off of a small amount of matrix with quartz. In great condition.The Champion Mine, located in Painesdale within Houghton County, Michigan, was one of the premier and longest-operating copper mines in the Keweenaw Peninsula, opening in 1899 and running under the Copper Range Company until 1967. Geologically, the mine is situated within the Mesoproterozoic Portage Lake Volcanic Series, exploiting steeply dipping amygdaloidal basalt flow tops formed inside the ancient Keweenawan Rift system. Mineralogically, it is world-famous for producing exceptional specimens of native copper filling vesicles and fractures, frequently accompanied by gangue minerals such as calcite, quartz, epidote, chlorite, and various zeolites.
Product details
Known provenance
| Date | Collector | Acquisition price |
|---|---|---|
| 08/2026 | Unknown Owner | $150.00 |
| — | Weinrich Minerals | 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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