| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Nevada > Copper (Spinel Law twins) |
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| DESCRIPTION: | No. 69391 |
| Mineral: | Copper (Spinel Law twins) |
| Locality: | Mountain City Copper Mine, Elko County, Nevada |
| Description: | Sharp well-crystallized native copper crystals (naturally occurring copper crystals) that crystallized in a narrow fracture that restricted growth. The copper crystals are elongated diamond-shaped form indicating twinning following the Spinel Law. Ex. Ed Allabough collection |
| Overall Size: | 4x3x0.8 cm |
| Crystals: | 1-6 mm |
| Archived: | For reference only |
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