-
Polished Copper nodule
- Phoenix Mine, Keweenaw Co., Michigan
- Small Cabinet, 6.6 x 4.2 x 3.7 cm
- Start Time: 07/22/2010 6:30:00 pm (CDT)
- End Time: 07/29/2010 6:30:00 pm (CDT)
- Auction Closed
Item Description
A showy, old-time and unusual copper specimen from the famous Phoenix Mine of Michigan. This is a sliced and polished copper nodule included with quartz. Molten copper with quartz dissolved and replaced a conglomerate cobble leaving the shape of the cobble. The Phoenix Mine was mainly a fissure mine, but it also worked the nearby Ashbed amygdaloid. This piece is related to the well-known Michigan copper "skulls". Super-rich copper ore! Hefty at 303 grams.