Sphalerite from Smuggler Union Mine, Marshall Basin, Telluride Mining District, Colorado, USA
USA | |
| Emmons, S. F., Becker, G. F. (1885) Statistics and Technology of the Precious Metals. Bureau of the Census. |
Rocks & Minerals 75:339 |
USA | |
| Emmons, S. F., Becker, G. F. (1885) Statistics and Technology of the Precious Metals. Bureau of the Census. |
Rocks & Minerals 75:339 |