Keweenaw Peninsula, Michigan, USA

This specimen appears to be recently cleaned with HCl which has left green and yellow copper salts in places on the specimen. No mine identification is known. That being said, it is a large specimen that is composed almost entirely of well formed crystals. The average crystal is 5 mm across, with many smaller ones and few up to 7 mm.

12.2 x 10.5 x 5.2 cm

Sold Specimen retained as part of the Minerals Sold But Not Forgotten Galleries