Copper
Cliff Mine, Allouez Township, Keweenaw County, Michigan, USA
11.3 x 7.5 x 2.3 cm. A superb, old-time, cabinet copper specimen from the famous Cliff Mine. This is from the well-known copper suite of Michigan collector Bob Nowakiowski, to me in exchange. The amazing, 3.7 cm wide, fan of iridescent, incredibly sharp, tetrahexahedral copper crystals perched atop the solidly crystallized, two-sided specimen ...
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