Limonite from Leadville, Lake County, Colorado, USA
USA | |
| Frank Karasti |
| Paul J. Broyles |
Frank Karasti | |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
| Geology and Mining Industry of Leadville, Samuel F. Emmons, 1886 |
| Frank Karasti |