11 Dec 2012
13:00 PST
Los Angeles
The World of Opals, The Splendor of Gold including the Margie and Robert E. Petersen Collection of Gold Nuggets
Back to auction 21137
The World of Opals, The Splendor of Gold including the Margie and Robert E. Petersen Collection of Gold Nuggets
Back to auction 21137
Rare and Immense Native Copper Nugget
Calumet Mine, Ontonagon, Michigan
Most of the large copper specimens from this area are found in gravel pits and are smooth from weathering. This unusual specimen was found deep in the mine and shows the natural copper in its quartz and basalt matrix. Weighing 697 pounds. Measuring 46 X 35 X 8 inches
Most of the large copper specimens from this area are found in gravel pits and are smooth from weathering. This unusual specimen was found deep in the mine and shows the natural copper in its quartz and basalt matrix. Weighing 697 pounds. Measuring 46 X 35 X 8 inches
Estimate:
US$ 30,000 - 40,000
£20,000 - 26,000
€23,000 - 31,000
£20,000 - 26,000
€23,000 - 31,000
Footnotes
- This lot is being sold in situ and will be available for shipping from an off-site warehouse. Please contact the Natural Department for further information.
Category: Natural History
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Natural History