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CRYSTAL SILVER NUGGET: COPPER RANGE MINES, HOUGHTON COUNTY, MICHIGAN, USA - NR! |
| This specimen is not for sale, and was archived from an external source for the purpose of preserving and sharing its geologic, geographic, and collector value. |
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Description: The ore horizons are known locally as amygdaloids, after the amygdaloidal-shaped gas bubbles in the local basalt lavas that filled with minerals. The last of the Copper Range Mines, the Champion mine, closed its door back in 1967.
Winning Bid: USD $23.5 - 12 bids (Year Sold: 2020 )
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