Quartz from selected localities.
USA | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
Karlstrom, Thor N.V., MBMG Memoir No. 25 P. 75 | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| http://www.montanamagazine.com/0004/eastwest1.htm#04 |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; Pearson, Robert Carl; Berger, B. R.; Kaufmann, H. E.; Hanna, W. F.; Zen, E-an (1988) Mineral resources of the eastern Pioneer Mountains, Beaverhead County, Montana. USGS Bulletin: 1766 |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
Crystal Park, Elkhorn Hot Springs area, Pioneer Mountains, Beaverhead County, Montana, USA