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Polished Copper nodule 
Back to WEEKLY MIXED MINERAL LIQUIDATION AUCTIONS - ends July 29
Phoenix Mine, Keweenaw Co., Michigan
- Starting Time:7/22/2010 06:30:00 PM(CDT)
- Ending Time:7/29/2010 06:30:00 PM(CDT)
Time Left:Auction Is Closed
- Size:6.6 x 4.2 x 3.7 cm
- Size Description:Small Cabinet
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.
