| 20hhgd.is ((COPPER in QUARTZ)), $30 MINIMUM BID, Greenstone Quarry, Adams County, Pennsylvania, 8 x 7.5 x 3.5 cm, Cabinet | |
_small.jpg) | A matrix of Quartz interlaced by Copper. Copper specimens are mainly from the Western states and Michigan. Uncommon for localities to be east of the Mississippi. Greenstone Quarry quarries greenstone for use in a variety of industrial applications including the gravel coating on roofing shingles. It is from an older stash of specimens from the Quarry. ex Glenn Davidson collection. |
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