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Copper - image 1
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Copper
Copper, 2.7 cm, from the Mass mine, Ontonagon County, Michigan. Christi Cramer photo.
T
Tom Gressman
Product details
Species
Copper
SizeMiniature
Dimensions2.7 cm
Locality
Mass mine, Ontonagon County, Michigan
Publications
  • Mineralogical Record Mineral Collections In Arizona page 58
Added on02/13/2026
Known provenance
Unknown date
Tom Gressman
Not disclosed—
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