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COPPER & SILVER NUGGET: CALUMET & HECLA MINES, HOUGHTON COUNTY, MICHIGAN - 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: So often you will see native copper and much rarer native silver that grew around these pebbles and showing ancient voids where the pebbles fell out during blasting and extraction in the mine.
Winning Bid: USD $27 - 5 bids (Year Sold: 2020 )
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Found near: Calumet, Michigan United States
Approx/Nearest City GPS Coordinates (Lat, Long): (47.246592, -88.454006)
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