| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Michigan > Copper |
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| DESCRIPTION: | No. 33431 |
| Mineral: | Copper |
| Locality: | Keweenaw Peninsula Copper District, Michigan |
| Description: | Crudely crystallized native (naturally occurring) copper in brown matrix with areas of red cuprite and green malachite (secondary alteration products of copper). The copper is exposed on both front and rear. |
| Overall Size: | 9x6x3.5 cm |
| Crystals: | |
| Archived: | For reference only |
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