Smoky Quartz from selected localities.
USA | |
| Fender, Michael and Allison, Terry (2007) |
San Diego Mining Company (1996), Field investigations of the Sunshine Valley area; undocumented pegmatites and gemstone prospects. Ramona, San Diego County, California. | |
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 348. | |
Sinkankas, J. (1988), Beryl: A Summary. Rocks & Minerals 63(01): p. 21; Jacobson, Mark I. (1988), Collections and Displays: The Proctor Collection, Colorado Springs; Colorado. Rocks & Minerals 63(1): p. 49, 55.; Jesse Fisher (2011) Mines and Minerals of the Southern California Pegmatite Province. Rocks & Minerals 86:14-34.; David London, George B. Morgan VI, and James L. Maner (2016) Pegmatites of the Little Three mine, Ramona, San Diego County, California. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado | |
San Diego Mining Company, 1995-1997. |
Hercules Mine, Ramona, Ramona Mining District, San Diego County, California, USA