Copper (naturally crystallized native copper) from Calumet, Keweenaw Peninsula Copper District, Houghton County, Michigan
| DESCRIPTION: | No. 70664
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| Mineral: | Copper (naturally crystallized native copper)
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| Locality: | Calumet, Keweenaw Peninsula Copper District, Houghton County, Michigan |
| Description: | Dendritic formation of sharp, well defined native copper crystals (naturally occurring copper crystals) with no matrix attached. The copper crystals are complete all around and display well from several sides. Collected ca. 1930 |
| Overall Size: | 4x2.5x2.5 cm |
| Crystals: | 1-15 mm |
| Archived: | For reference only |
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