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Himalaya Mine (Himalaya dikes; Himalaya pegmatite), Gem Hill, Mesa Grande District, San Diego Co., California, USA

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Latitude & Longitude (WGS84): 33° 12' 43'' North , 116° 47' 52'' West
Latitude & Longitude (decimal): 33.2119444444, -116.797777778

A miarolitic LCT-type granitic pegmatite, highly boron-enriched, located in north-central San Diego Co., California, USA. First discovered in 1898, the Himalaya mine was one of the largest producers of gem and specimen-grade tourmaline in North America throughout much of the 20th century.

Mindat Articles

The J. G. Braye Residence and Bunk House by J. S. Lewis & E. M. Ramsey 1988 by Scott L. Ritchie
The Treasure of the Himalaya Mine by Veryle Carnahan 1960 by Scott L. Ritchie

Mineral List

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

42 valid minerals. 1 (TL) - type locality of valid minerals.

Localities in this Region


This page contains all mineral locality references listed on 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 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.


Kunz, G. F. (1905a), Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37; pages 133-135.

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.

Carnahan, V. (1960), The Treasure of the Himalaya Mine. Gems & Minerals magazine, November, pages 21-25, 55-57.

Weber, F. H. (1963), Geology and mineral resources of San Diego County, California. California Division of Mines and Geology, County Report 3: pages 91-92.

Rynerson, F. J. (1967), Exploring and mining for Gems and Gold in the West. Happy Camp, California: Naturegraph Publishers, Inc., 204 pages.

Foord, E. E. (1977), Famous Mineral Localities: the Himalaya Dike System, Mesa Grande District, San Diego County, California. Mineralogical Record 8(6): 461-474.

Foord, Eugene E. and Mrose, Mary E. (1978), Rynersonite, a new mineral from San Diego County, California. American Mineralogist, Volume 63, pages 709-714.

Hochleitner, R. and Weise, C. (1987), Die Himalaya Mine bei Mesa Grande in Kalifornien. Lapis 12 (10), 11-32 (in German).

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.

Rocks & Minerals (1998), 168 & 178, figure 30.

Fisher, J., Foord, E. E. and Bricker, G. A. (1999), The geology, mineralogy, and history of the Himalaya mine, Mesa Grande, San Diego County, California. California Geology 52(1): 3-18.

Fisher, J. (2002), Gem and rare-element pegmatites of southern California. Mineralogical Record, Volume 33, Number 5: pages 390-396, photographs.

Ertl, A., Rossman, G.R., Hughes, J.M., London, D., Wang, Y., O’Leary, J.A., Dyar, M.D., Prowatke, S., Ludwig, T. & Tillmanns, E. (2010): Tourmaline of the elbaite-schorl series from the Himalaya Mine, Mesa Grande, California, U.S.A.: A detailed investigation. Am. Mineral., 95, 24-40.

Fisher, Jesse (2011), Mines and Minerals of the Southern California Pegmatite Province. Rocks & Minerals: 86: 14-34.

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