| 8hlkmis ((COPPER, CALCITE)), $10 MINIMUM BID, Greenstone Quarry, Adams County, Pennsylvania, 5.5 x 5 x 2.5 cm, Miniature | |
 | Copper is uncommon east of the Mississippi with deposits in Arizona and Utah and Michigan. Here is a Pennsylvanian locality in Adams County. Locality mined for the greenstone, serpentine for industrial uses. |
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