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USA | |
- San Franciscan volcanic field (San Francisco Peaks; San Francisco Mts)
| Hanson, S. L., A. U. Fastner, W. B. Simmons (2008) Mineralogy of the Fumerole deposits at Sunset Crater Volcano National Monument, Northern Arizona. Rocks & Mnerals 83:6 pp 534-544. Hanson, S.L.. et al (2002) 29th Rochester Mineralogical Symposium, Abstracts of contributed papers, 8. |
| Harrer, C.M (1964), US Bur. Mines Info. Circ. 8236: 64 MRDS file #10048190. |
- Pikes Peak Mining District
| MRDS file #10027526. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. U.S. Geological Survey Professional Paper 829 |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
- Quartz Creek Pegmatite Mining District
| USGS Proffesional Paper 265 |
| Winchell, Alexander Newton (1914) Mining districts of the Dillon quadrangle, Montana, and adjacent areas. Bulletin Vol. 574. US Geological Survey doi:10.3133/b574 |
- White Earth Mining District (Powderhorn Mining District)
| 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. |
- La Plata Mining District (California Mining District)
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
- La Plata Mining District (California Mining District)
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |