Copper - image 1
Photo by Jeffrey A. Scovil

Copper

Do you know Sean Finneson?

Invite them to claim this profile and join EarthWonders.

Sign in to invite
Help improve this record

No owner is registered for this specimen yet. If it's yours or you know more about it, you can add the owner, provenance, publications and other details.

Sign in to contribute
Cubic copper crystal cluster, 2 cm, from the Keweenaw Peninsula, Michigan. Ex New York mineral dealer Hugh A. Ford (1885–1966), ex Richard A. Bideaux (1935–2004), ex Lawrence H. Conklin (1933–2016); Sean Finneson collection; Jeff Scovil photo.

Product details

SpeciesCopper
SizeThumbnail
Dimensions2.0 cm
Added on02/13/2026
LocalityUSA, Michigan, Keweenaw Peninsula
Publications
  • Mineralogical Record Refined Elegance page 49
Current owner
Sean Finneson

Added by the community · Not a registered member

Previous owners
DateCollectorAcquisition price
—Lawrence H. ConklinNot disclosed
—Richard A. BideauxNot disclosed
—Hugh A. FordNot disclosed

Learn more

Copper
Mineral guide
Learn about Copper
native copper with spinel-twinned crystals and arborescences; notable from Lake Superior, Itauz, Dongchuan, Corocoro, prized for color and localities.
Copper
Regional guide
Copper from Keweenaw Peninsula, Michigan, USA
Keweenaw Peninsula copper - classic native copper from Michigan, famed for wiry arborescent sprays, sharp crystal faces, and historic mines prized by collector…
Locality guide
Keweenaw Peninsula
A collector's guide to Keweenaw Peninsula, USA: its geology, mining history and notable minerals, illustrated with the 209 specimens documented from this locality on EarthWonders.