Knowlton Mine, Ontonagon County, Michigan, USA

This Copper specimen has some well formed crystals. The specimen is from a mine from which good Copper crystals are seldom seen. The specimen has a rich patina which exhibits a reddish color in places.

From the George Katzmarek collection

12.2 x 6.4 x 3.6 cm

$100      Click here to order this mineral.