Amethyst from selected localities.
USA | |
| Rocks & Min.:59:9. |
Rocks & Min.:59:9.; Econ Geol (1984) 79:439-447 | |
Rocks & Min.: 59:9. | |
Rocks & Minerals (2010) 85:396-413 | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
Commodore Mine, Amethyst vein, Creede Mining District, Mineral County, Colorado, USA