Copper was named for the island of Cyprus, where the Romans obtained their supply. Copper is one of the oldest metals ever used and has been one of the important materials in the development of civilization. Because of its properties, singularly or in combination, of high ductility, malleability, and thermal and electrical conductivity, and its resistance to corrosion, copper has become a major industrial metal, ranking third after iron and aluminum in terms of quantities consumed. The first mineral boom in the United States occurred in 1843 when people from all over the continent began to hunt for the copper, silver and iron of Michigan’s upper peninsula. These mines were in commercial operation for more than a hundred years. Michigan has produced over 14 billion pounds of copper since mining began in 1845. Silver is often extracted along with the copper deposits. The copper mined in Michigan helped fuel the industrial revolution that occurred in the United States. FREE UPS Ground shipping within the (48) Continental United States!
To all our Alaska, Canada and Hawaii customers: you will be notified of any applicable shipping charges prior to processing your order for approval. |
|
| Brilliant copper coloring on all sides with flecks of light green host rock.
Overall Size 4.25" X 2" highest point 1.5" |
|
|
| Suspended copper formation on light green host rock.
Overall Size 5.5" X 4" highest point 2.75" |
|
|
| Coppery bronze coloring on green host rock.
Overall Size 4.75" X 3.75" width 1.25" |
|
|
| Beautiful specimen on host rock with white calcite. Underneath side has brilliant copper streak.
Overall Size 5.25" X 2.75" highest point 2.5" |
|
|
| Bright copper on light green host rock. Shows well on all sides.
Overall Size 6.5" X 3" tallest point 3" |
|
|
| Showy piece of copper resembling a Dragon's Head. Shows well on all sides.
Overall Size 5" X 3" highest point 2.25" |
|
|
|