The Lookout mine is situated approximately 4.5 miles northeast of Ramona, and joins the Hercules mine on the northeast.
A claim to the deposit was first made by Samuel G. Ingle and Harry Titus, of San Diego, and Mr. Pray, of Escondido; in July, 1903.
Note: Work in progress to update this entry including more historic and modern development data, mineral species, references etc.
References:
Kunz, George Frederick (1905a), Gems, jewelers’ materials, and ornamental stones of California: California Division Mines Bulletin 37, 171 pp.: 148-149.
Merrill, F. J. H. (1914), Geology and Mineral Resources of San Diego and Imperial Counties: Gems, Lithia Minerals. California State Mining Bureau, San Francisco, Cal. California State Printing Office, December. Chapter 1: 63, 72.
Weber, F.H., Jr. (1963a), Mines and mineral resources of San Diego County, California. California Division of Mines and Geology County Report 3, 309 pp.: Pl. 5.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 195.
Pemberton, H. Earl (1983), Minerals of California: 455 (map 13-4).
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Map Reference: 33°3'37"N , 116°47'27"W
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Mineral List:34 entries listed. 15 valid minerals.
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