| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Arizona > Copper (Spinel Law twins) |
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| DESCRIPTION: | No. 60813 |
| Mineral: | Copper (Spinel Law twins) |
| Locality: | Emperor Fault, Ray Mine, Mineral Creek District, Pinal County, Arizona |
| Description: | Arborescent formation of sharp, well crystallized native copper crystals with greenish patina on all surfaces. The copper crystals are twinned following the Spinel Law of isometric twinning resulting in elongated, pointed crystals. |
| Overall Size: | 18x15x12 mm |
| Crystals: | 0.5-17.0 mm |
| Archived: | For reference only |
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