PAS-04
Manganite
Small Cabinet, 7.7 x 7.6 x 4.6 cm
Lake Superior, Michigan, USA
Ex. Philadelphia Academy of Natural Sciences
SOLD
An old specimen with interlocking sprays of manganite, to 2.5 cm, embedded in ore matrix. Classic old material from Michigan's brief heyday of mining a few other elements besides copper, but rarely seen today on the market