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Stewart Mine (MS 6162; Stewart Lithia mine), Tourmaline Queen Mountain (Pala Mtn; Queen Mtn), Pala, Pala District, San Diego Co., California, USA

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Latitude & Longitude (WGS84): 33° 22' 52'' North , 117° 3' 45'' West
Latitude & Longitude (decimal): 33.38111,-117.06250
Köppen climate type:Csa : Hot-summer Mediterranean climate


Summary:
A complex and highly mineralized granitic pegmatite-aplite dike, located near the village of Pala. The pegmatite was originally mined during the late 19th and early 20th centuries as a source of lithium from massive pods of lepidolite that occur in the dike. Was reopened in the late 1960's as a gem mine and has periodically produced specimens and gem material of elbaite, as well as morganite and kunzite. The mine is particularly known for its reddish-pink elbaite.

The deposit is on private land, patented in 1949 by Blanche C. Crane.

Mindat Articles

The Stewart Lithia Tourmaline Mine by E. R. Swoboda 2000 by Scott L. Ritchie




Mineral List

Mineral list contains entries from the region specified including sub-localities

45 valid minerals. 3 (TL) - type locality of valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Holocene - Pliocene
0 - 5.333 Ma



ID: 2817582
Quaternary alluvium and marine deposits

Age: Cenozoic (0 - 5.333 Ma)

Stratigraphic Name: Temescal Formation; Modesto Formation; Victor Formation; Alameda Formation; Aromas Red Sands; Bautista Beds; Brawley Formation; Borrego Formation; Burnt Canyon Breccia; Cabezon Fanglomerate; Campus Formation; Casitas Formation; Chemehuevi Formation; Corcoran Clay; Cushenbury Springs Formation; Dos Picachos Gravels; Dripping Springs Formation; Frazier Mountain Formation; Friant Formation; Harold Formation; Heights Fanglomerate; Hookton Formation (part); Huichica Formation; La Habra Formation; Manix Lake Beds; Mohawk Lake Beds; Montezuma Formation; Nadeau Gravel; Ocotillo Conglomerate; Orcutt Formation; Pacoima Formation; Pauba Formation; Peckham Formation; Pinto Formation; Resting Springs Formation; Riverbank Formation; Rohnerville Formation; San Dimas Formation; Shoemaker Gravel; Temecula Arkose; Battery Formation; Bay Point Formation; Colma Formation; Lindavista Formation; Lomita Marl; Merritt Sand; Millerton Formation; Palos Verdes Sand; San Pedro Formation; Sweitzer Formation; Timms Point Silt

Description: Alluvium, lake, playa, and terrace deposits; unconsolidated and semi-consolidated. Mostly nonmarine, but includes marine deposits near the coast.

Lithology: Major:{coarse alluvium}, Minor:{fine alluvium}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Cretaceous
66 - 145 Ma



ID: 2706610
Granite pegmatite dike

Age: Cretaceous (66 - 145 Ma)

Description: Tabular, pegmatitic-textured granitic dikes. Most dikes range in thickness from a few centimeters to over a meter. Larger dikes are typically zoned compositionally and texturally.

Reference: Kennedy, M.P., and S.S. Tan. digital prep. by Bovard et al. Geologic Map of the Oceanside 30’ x 60’ Quadrangle, California. California Department of Conservation California Geological Survey. [131]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License


Localities in this Region

USA

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kunz, G. F. (1905), Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 55-57; 124-125.
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, pages 61-110.
Jahns, R. H. and Wright, L. A. (1951), Gem and Lithium-bearing pegmatites of the Pala District, San Diego County, California. California Division of Mines special report 7A: pages 59-61.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 282, 730, 1051.
Sinkankas, J. (1988), Beryl: A Summary. Rocks & Minerals 63(01): p. 21.
Robinson, George W. & King, Vandall T. (1989), What's New in Minerals? Sixteenth Annual Rochester Academy of Science Mineralogical Symposium. Mineralogical Record, Volume 20, Number 5: p. 399.
Bartsch, J. A. (1990), Collections and Displays: California State Mining and Mineral Museum, Mariposa, California. Rocks & Minerals 65(01): p. 45.
Dunning, Gail E. & Cooper, Joseph F. Jr. (1998), Namibite: A Summary of World Occurrences. Mineralogical Record, Volume 29, Number 3: p. 164.
Fisher, J. (2002), Gem and rare-element pegmatites of southern California. Mineralogical Record, Volume 33, Number 5: pages 376-378, photographs.
Morton, D. et al. (2011), Petrogenesis of the Li-bearing Stewart Pegmatite, Pala, California. Unpublished manuscript: 15 pages, charts and photographs.

Mineral and/or Locality  
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