SOLD
MD-113298
Copper
Gull Rock (Grand Marais), Eagle Harbor, Keweenaw Co., Michigan, USA
Small Cabinet, 6.0 x 3.3 x 1.4 cm
Ex. Seaman Mineralogical Museum
SOLD
Sharp, spinel-twinned copper crystals to 2.1 cm with a nice patina form an aesthetic, arborescent crystal cluster on this showy piece from the Grand Marais fissure in Lake Superior. Ex Seaman Museum Collection. This form of copper is not so common in Michigan, and its a pretty, intricate piece!

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