| 15dm491 ((COPPER in CONGLOMERATE)), $20 MINIMUM BID, Keweenaw Peninsula, Michigan, 12.5 x 8 x 2 cm, Cabinet, | |
 | Here is a specimen of brown pebbles making up a conglomerite with the cement between pebbles being Copper. Photo shows a yellowish color but the color is Copper. Front side is sawn and easily shows the Copper. Unsawn side has oxidized Copper that blends in and is hard to see without a loop. Dennis McMurdie collection. |
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