DumortieriteDehesa Dumortierite deposit, Alpine, Laguna Mts, San Diego Co., California, USA
Photo: 2007, JGW Latitude: 32°48'7"N
Longitude: 116°46'47"W
A major dumortierite deposit and former prospect located in the N½NW¼NE¼ sec. 9, T16S, R2E, SBM, about 2.5 miles SSW of Alpine and 200 feet (90 meters) S of the Alpine-Dehesa Road.
Mineralization is a dumortierite pegmatite.
References
Ford, William Ebenezer (1902), On the chemical composition of dumortierite: American Journal of Science, 4th. Series: 14: 426-430; […Zeitschr. Kristallographie, Band 37: 417-421 (1903)]: 427.
Lawson, Andrew Cowper (1904), The orbicular gabbro at Dehesa, San Diego County, California: University of California, Department of Geological Science Bulletin: 3: 383-396; […(abstract): Science, new series: 15: 415 (1902)]: 386.
Kunz, George Frederick (1905a), Gems, jewelers’ materials, and ornamental stones of California: California Division Mines Bulletin 37, 171 pp.: 71.
Schaller, Waldemar Theodore (1905a), Dumortierite: American Journal of Science, 4th. Series: 19: 211-224; […USGS Bulletin 262: 91-120]: 96, 97, 211.
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.: 171, 173.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 79, 173, 275, 307, 326, 338, 344.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 144, 171, 317, 386, 452, 454, 476.
Mineral List
9 entries listed. 7 valid minerals.
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