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Copper
Copper, 8.9 cm, from the Centennial No. 6 mine, Calumet & Hecla Conglomerate Lode, Calumet, Houghton County, Michigan. The specimen is an example of a rare triple “copper skull”—a copper form that is unique to this area of Michigan. Ex F. John Barlow collection (No. 1368). Illustrated in The F. John Barlow Mineral Collection (1996), page 277. Jeff Scovil photo.
Unknown Owner
Product details
Species
Locality
Centennial No. 6 mine, Calumet & Hecla Conglomerate Lode, Calumet, Houghton County, Michigan
Publications
- Mineralogical Record Mineral Collections In American Northeast page 278
Added on02/13/2026
Comments
Known provenance
Unknown date
Unknown Owner
Not disclosed—Species and Locality Wiki Pages
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