Native Copper - 24 pc lot Hearts Each type of the Lake

Each type of the Lake Superior region's agates are discussed in-depth

5 cm x 5 cm base

with parts of opaque white

From potholes carved into Precambrian basalt by torrential floods of glacial meltwater to the fossil tracks of ancient slug-like creatures that crawled across tidal flats 500 million years ago

Native Copper - 24 pc lot Hearts Each type of the LakeMichigan Native Copper Michigan's Keweenaw Peninsula is considered the most important locality in the world for pure native copper Mining began in 1845 and continued through 1982, and over 7 million tons of refined copper were recovered from the mines. At the turn of the 20th century it led the world in copper production and "Lake Copper" was the purity standard. The chemical symbol for copper is Cu. Size range is approximately 2 3 inches in length.