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CALCITE with COPPER on PREHNITE
Phoenix Mine, near Eagle Harbor, Keweenaw County, Michigan, USA 7 cm × 7.5 cm × 4 cm

Sold Specimen Number: 1206-058 Browse All Specimens
There’s not much copper on this one, but it’s still a fascinating “Copper Country” specimen. The matrix is covered with a layer of pinkish prehnite, the fibrous nature of which can be seen on the side view. This layer is then topped by copper included calcite crystals and some hackly native copper.
CALCITE with COPPER on PREHNITECALCITE with COPPER on PREHNITE
Jesse La Plante photo  
CALCITE with COPPER on PREHNITE CALCITE with COPPER on PREHNITE CALCITE with COPPER on PREHNITE CALCITE with COPPER on PREHNITE CALCITE with COPPER on PREHNITE CALCITE with COPPER on PREHNITE