Copper replacing Agate - image 1
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Copper replacing Agate
Copper replacing agate, 3.5 cm, from the Wolverine #2 mine, Houghton County, Michigan. These unusual agates, unique to the Keweenaw, were discovered only recently. Photo by J. Jaszczak and C. Stefano.
Product details
Species
SizeMiniature
Dimensions3.5 cm
Locality
Wolverine #2 mine, Houghton County, Michigan
Publications
  • Mineralogical Record Mineral Collections In American Midwest page 210
Added on02/13/2026
Known provenance
Unknown dateNot disclosed
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