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.
References:
Fisher, J., E. E. Foord, and G. A. Bricker (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.
Foord, E.E. (1977): Famous mineral localities. The Himalaya Dike System. Mineralogical Record 8, 461-475
Hochleitner, R. and Weise, C. (1987): Die Himalaya Mine bei Mesa Grande in Kalifornien. Lapis 12 (10), 11-32 (in German)
Kunz, G. F. 1905. 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.
Mineral. Rec. 20(5): 399
Rocks & Min. 63: 21
Rocks & Min. (1998): 168 & 178, Figure 30
Rynerson, F. J. 1967. Exploring and mining for Gems and Gold in the West. Happy Camp, California: Naturegraph Publishers, Inc., 204 pages.
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.
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Map Reference: 33°12'50"N , 116°48'4"W
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