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USA | |
- White Earth Mining District (Powderhorn Mining District)
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. Theodore J. Armbrustmacher, (1981) The complex of alkaline rocks at Iron Hill, Powederhorn district, Gunnison County, Colorado. in 32nd Field Conference New Mexico Geological Society, pp. 293-296. Larsen, E.S. (1942) Alkalic rocks of Iron Hill, Gunnison County, Colorado. Shorter contributions to general geology, 1941-42. United States Geological Survey Professional Paper 197-A. |
- Galena Mining District (Henson Creek Mining District)
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
| King, Vandall T., Robinson, George W. (1989) What's New in Minerals? - Sixteenth Annual Rochester Academy of Science Mineralogical Symposium. The Mineralogical Record, 20 (5) 387-399 Rocks & Min.:62:9 Rocks & Min.:64:140-141 Rocks & Min.:65:114-149 |
| Rocks & Min. (2009):84:414-425. |
| Rocks & Minerals 71:2 pp94-101 |
| 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. |