|
USA | |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
| U.S. Geological Survey Professional Paper 1753 |
| Irving, J. D. (1905) Bulletin Vol. 260, Ore Deposits of the Ouray District, Colorado. US Geological Survey p.50-77. doi:10.3133/b260 U.S. Geological Survey Professional Paper 1753 |
| Rocks & Minerals 82:368-380 2008 New Mexico Mineral Symposium abstracts |
| U.S. Geological Survey Professional Paper 1753 |
| U.S. Geological Survey Professional Paper 1753 |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |