Copper Ore in Matrix
Updated October 18, 2026
This auction ended on November 7, 2026.
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| Lot number | 0037 |
| Estimate | $400 - $500 |
| Opening bid | $150 |
| Auction | Nov. 7 Rock, Fossil & Gemstone Timed Auction |
| Date | November 7, 2026 at 1:00 PM EST |
| Auction house | Fossils & Gemstones of Houston |
| Location | Houston, Texas |
Copper ore in matrix from the Winonia Mine in Houghton County, Michigan. 5" x 5.5" x 1". 1 pound, 13 ounces.
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