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USA | |
| Geology and Mining Industry of Leadville, Samuel F. Emmons, 1886 |
| Geology and Mining Industry of Leadville, Samuel F. Emmons, 1886 |
| Geology and Mining Industry of Leadville, Samuel F. Emmons, 1886 |
| Geology and Mining Industry of Leadville, Samuel F. Emmons, 1886 |
| Geology and Mining Industry of Leadville, Samuel F. Emmons, 1886 |
| Geology and Mining Industry of Leadville, Samuel F. Emmons, 1886 |
| Geology and Mining Industry of Leadville, Samuel F. Emmons, 1886 |
| Geology and Mining Industry of Leadville, Samuel F. Emmons, 1886 |
| Geology and Mining Industry of Leadville, Samuel F. Emmons, 1886 |
| Geology and Mining Industry of Leadville, Samuel F. Emmons, 1886 |
| Sterling, Geoff (2023) Personal Communication. |
| Mineralogical Record:16(3):171-201 |
| The Oxidized Zinc Ores of Leadville Colorado, G. F. Loughlin, 1918 |
| Mineral Collector (1895) 1:168-169 |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
Ibex Mine, Breece Hill, Leadville, Lake County, Colorado, USA