Float Copper Nugget, Beautiful Green Patina & Texture, 1 Lbs 10 Oz.
- Source: eBay
A specimen of float copper from the Copper Country of Michigan.No two pieces of float copper are alike, and this one has interesting features. When the glaciers came down across the Copper Country tens of thousands of years ago, they picked up pieces of copper and deposited them hundreds of miles away. Imagine a glacier, one to two miles thick, moving across outcrops and shearing off pieces of copper. When the glaciers melted, these pieces were tumbled and worn by the melt waters, then eventually buried in the debris. Float copper is only discovered by chance, by people using metal detectors, or by somebody bulldozing a trail across a plat of land or excavating to put in a foundation for a building, etc. (it does not come from copper mines); pieces are discovered as far south as Chicago and as far north as Canada, wherever the glaciers existed and moved thousands of years ago. This large specimen measures about 3-1/4 by 3-1/2 inches and is up to 1-1/2 inches thick; the surfaces are textured, with purple and green patinated copper, some thin weathered calcite stained with dirt; weighs 1 pound 10 ounces; an interesting small opening probably formed when calcite was weathered out. Shipped insured padded flat rate envelope. If you purchase more than one lot, I will try to combine ... read more