Mineral Specimen #6070 Polshed Float Copper with Silver (Halbreed)
Ontonagon Co., Michigan
10.5 x 5 x 2.7 cm
The term 'Float Copper' refers to Copper specimens which have weathered loose from enclosing matrix and have drifted due to glacial movement. These are often found in the forests of the Keweenaw with the use of a metal detector and can sometimes reach many feet across. Since the Copper is badly weathered, it is a common practice to polish some of the faces as was done with this specimen. The Copper on this specimen has a darker red color likely due to the presence of a coating of Cuprite. Of particular note is the presence of Silver which i present both in a polished area and as a bent crystal at one end of the specimen.
Flaws: There are some faint scratches left over from when the specimen was polished.
This mineral is also found in the following galleries: Minerals From Michigan | Copper | Gold and Silver | Polished & Worked | Minerals Priced Between 50 and 99 Dollars