M & W Minerals
Walter R. Kellogg
517 294 6709
Houghton County, Michigan, USA
The Copper of this specimen has formed casts after cobbles found in a conglomerate and indeed there are a few cobbles still attached. This appears to be Calumet and Hecla lode material from around the Calumet area.
From the Kirk Valuet collection
6.5 x 6.5 x 5.8 cm
$75 Click here to order this mineral.