UPM01 Copper
Pewabic Mine, Pewabic, Houghton Co., Michigan, USA
10.8x 6.6x 4.5 cm
$5200
A great, exceptionally well crystalized copper specimens form one of the older and more obscure Michigan copper mines. The Pewabic Mine operated from about 1855 until 1884, and was later incorporated into the Quincy Mine. The piece features numerous very sharp crystals on a matrix of more massive copper, with a great patina that does not appear to have been affected by the usual cleaning with acid.