| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Michigan > Copper in Calcite |
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| DESCRIPTION: | No. 21882 |
| Mineral: | Copper in Calcite |
| Locality: | Keweenaw Peninsula Copper District, Michigan |
| Description: | Translucent calcite with native copper inclusions. The calcite prevents the copper from oxidizing, keeping the copper a bright. Was lightly cleaned in acid to remove surface coating. The large calcite crystal has a complex surfaces of parallel faces. |
| Overall Size: | 9x7x6 cm |
| Crystals: | 1-90 mm |
| Archived: | For reference only |
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