| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Michigan > Copper on Prehnite |
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| DESCRIPTION: | No. 70852 |
| Mineral: | Copper on Prehnite |
| Locality: | Osceola Mine, Keweenaw Peninsula Copper District, Houghton County, Michigan |
| Description: | Lustrous translucent green prehnite crystals to 2.5 mm with many metallic native copper crystals (naturally occurring copper crystals) that appear to have crystallized around another mineral, possibly calcite, that later dissolved away. Ex. Martin Farber collection; ex. Lesnicks |
| Overall Size: | 6.5x4x3 cm |
| Crystals: | 1-2 mm |
| Archived: | For reference only |
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