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Copper, Skull

Keweenaw Peninsula
Size: 20.0x16.0x13.0 cm
Largest crystal size: as above mm
This specimen is not available for sale.

A MONSTER specimen of native copper that is a classic "copper skull" from the Keweenaw Peninsula. It is, perhaps the largest that I have seen. These types of formations occur when copper solutions invade conglomerate beds and partially replace cobbles in the conglomerate. When the conglomerate deteriorates, a copper form like this results and is recovered during the mining process. Usually they are much smaller than this. Amazing!

All prices in Canadian dollars. For payment in US$, deduct 25% or multiply by 0.75.

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