|
Description |
Heavy specimen with Copper in Quartz-rich matrix. One face was polished to highlight the Copper inclusions. High copper content - approximately 50%. Ex. J. Cilen (1916-1997) #17700; ex. N. Fasciola. |
|
Locality |
Osceola Mine, Calumet, Keweenaw Peninsula Copper District, Michigan |
|
Collection |
John Betts - Fine Minerals |
