Orthoclase from Ramona, Ramona Mining District, San Diego County, California, USA

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USA
California San Diego County Ramona Mining District Ramona ⓘ A.B.C. Mine (ABC Mine; Daggett & MacIntosh; Daggett group)	Kunz, George F. (1905) Gems, Jewelers' Materials, and Ornamental Stones of California. Bulletin 37 (2nd ed.) California State Mining Bureau
ⓘ Apollo Lode claim	Fender, Michael and Allison, Terry (2007)
ⓘ Coyote diggings	San Diego Mining Company (1996), Field investigations of the Sunshine Valley area undocumented pegmatites and gemstone prospects. Ramona, San Diego County, California.
ⓘ Equestrian prospect	San Diego Mining Company (1996), Field investigations of the Sunshine Valley area undocumented pegmatites and gemstone prospects. Ramona, San Diego County, California.
ⓘ Hercules Mine (Beryl claim; Hercules claim; Hercules group; Hercules prospect)	Foord, Eugene E., Martin, Robert F., Spaulding, Louis B., Mason, Roger A. (1989) Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. The Mineralogical Record, 20 (2) 101-127
ⓘ Little Three Mine	Foord, Eugene E., Martin, Robert F., Spaulding, Louis B., Mason, Roger A. (1989) Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. The Mineralogical Record, 20 (2) 101-127
ⓘ Lookout Mine (Hercules group; Lookout prospect; Upper Hercules mine)	Kunz, George F. (1905) Gems, Jewelers' Materials, and Ornamental Stones of California. Bulletin 37 (2nd ed.) California State Mining Bureau
ⓘ Prospect Mine	Kunz, George F. (1905) Gems, Jewelers' Materials, and Ornamental Stones of California. Bulletin 37 (2nd ed.) California State Mining Bureau
ⓘ Surprise Mine	Kunz, George F. (1905) Gems, Jewelers' Materials, and Ornamental Stones of California. Bulletin 37 (2nd ed.) California State Mining Bureau