• Copper - FCU12

Copper - FCU12

Michigan Float Copper, Keweenaw Peninsula

14" / 12 lbs

During the last ice age, ca. 10,000 years ago, glaciers scraped the Upper Peninsula of Michigan freeing this copper nugget from the bedrock. The copper was dragged, or “floated”, within the ice sheet along with other rocks, gravel and sand. The long period of burial since the cessation of glacial movements oxidized the surface copper. The resulting oxidation products are primarily malachite (a green copper carbonate) and cuprite (a red copper oxide). I polished portions of the surface and coated this uniquely-shaped specimen with a thin coat of lacquer to prevent oxidation. 

I call this one “rainbow trout”.

My email is: cory.cotter@icloud.com