Copper with Calcite from Adventure Mine, Greenland, Ontonagon Co., Michigan. 15x25x13mm grouping of well-crystalized copper on 45x40x25mm matrix. The specimen is accompanied with original Dan Weinrich label.
In stockEmail your friend
|Dimensions||4.5 × 4 × 2.5 cm|
Copper “Skull” from Centennial Mine, Houghton Co., Michigan. Seldom seen formation which occurs when copper is deposited around cobbles in a conglomerate lode. The cobble deteriorates over time and leaves the copper “skull” formation. Specimen size is 95x85x40mm. From Ed Coleman Collection.