Michigan Float Copper (Cu15)


  • This special piece contains a significant amount of Silver in addition to copper, Malachite and Cuprite.
  • This unique specimen of Float Copper was carried by glaciers during the last ice age, which ended some 12,000 years ago.
  • It was then deposited in its end moraine & subsequently unearthed by metal detecting (on private land with mineral rights).
  • We cut the base & polish the face to a mirror-like shine with a high grade lacquer to prevent oxidation.
  • Sourced: Keweenaw Peninsula, Michigan USA
  • Minerals: Copper, Silver, Malachite, Cuprite
  • Size: 11" x 1" x 11"