Galena from selected localities.
USA | |
| Minerals of Colorado (1997) E.B. Eckel |
| U.S. Geological Survey Professional Paper 371 |
Minerals of Colorado (1997) E.B. Eckel; U.S. Geological Survey Professional Paper 371 | |
U.S. Geological Survey Professional Paper 371 | |
| Emmons and Becker (1885) Statistics and Technology of the precious Metals. Census reports Tenth census. June 1, 1880, Volume 13 By United States. Census office. 10th census, 1880, United States. Census Office |