Copper from selected localities.
USA | |
| The Mineralogy of The Butte District, Montana; Guilbert and Zeihen 1964 |
Specimen from Claude Huber Collection. His label indicates it was personally collected by him in 1950. | |
Weed, W.H. (1912) Geology and Ore Deposits of the Butte District, Montana. United States Geological Survey, Professional Paper 74, 262 pages plus plates. | |
Rick Dalrymple photo |
High Ore Mine, Butte Mining District, Silver Bow County, Montana, USA