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USA | |
| Carnein, Carl R., Bartos, Paul J. (2005) Famous mineral localities: The Cripple Creek Mining District, Colorado, in March - April 2005. The Mineralogical Record, 36 (2) 143-185 |
| King, Van (n.d.) Personal communcation. |
| P Haas collection |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
| Joseph Dorris (2016) Amazonite and Smoky Quartz Pegmatites of the Smoky Hawk Trend, Teller County, Colorado. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |