David K. Joyce


6.1x4.4x3.5 cm
Central Exploration Mine
Keweenaw Peninsula
Minnesota, USA


Item number: 25178

Here is a nice specimen of native copper showing a spire of copper on one side that is trying hard to be a crystal. It is intergrown with calcite and zeolites. From the Central Mine, one of the Great old mines of the Keweenaw Peninsula.