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Lookout Mine (Lookout prospect; Upper Hercules; Hercules group), Ramona District, San Diego Co., California, USA

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).





Map Reference: 33°3'37"N , 116°47'27"W

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Mineral List:
'Adularia'
Albite
var: Cleavelandite
'Albite-Anorthite Series'
Almandine
'Almandine-Spessartine Series'
Beryl
var: Aquamarine
Biotite
'Clay'
Clinozoisite
Cookeite
Elbaite
'Elbaite-Schorl Series'
'Feldspar Group'
'Garnet Group'
Grossular
var: Hessonite

Kaolinite
Lepidolite
Manganese
'Manganese Oxides'
'Mica Group'
Microcline
Montmorillonite
Muscovite
Orthoclase
'Perthite'
Quartz
var: Smoky Quartz
Schorl
Spessartine
Stibiotantalite
Tantalite
'Tourmaline'


34 entries listed. 15 valid minerals.

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Copyright © Jolyon Ralph and Ida Chau 1993-2009. Jobs in California, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 22nd Nov 2009 16:14:10