Big Reef Mine (Pisgah; Clark; Clark No. 1; Willkie; End Line; Bobbie Sullivan; Black Butte Mine; N. Extension Time; Hangover Mine), Pisgah siding, Lavic, San Bernardino Co., California, USA
Latitude: 34°48'21"N
Longitude: 116°20'18"W
A former Mn mine located in secs. 3 & 10, T8N, R6E, SBM, 2½ miles N of Pisgah siding, Santa Fe Railroad.
Mineralization is hosted in andesite.
References
Trask, Parker Davies, Ivan F. Wilson & F.S. Simons (1943), Manganese deposits of California – a summary report: California Division Mines Bulletin 125: 160.
California Journal of Mines and Geology (1943): 39: 492-493.
Trask, Parker Davies (1950) Geologic description of the manganese deposits of California. California Division of Mines Bulletin 152, 378 pp.: 188-191.
Trengrove, Russell R. (1950), Reconnaissance of California Manganese Deposits, U.S. Bureau of Mines Report of Investigation 5579.
Wright, L.A., et al (1953), Mines and mineral resources of San Bernardino County, California: California Journal of Mines and Geology: 49(1-2): 114-115.
Hewett, Donnel Foster (1964), Veins of hypogene manganese oxide minerals in the southwestern United States: Economic Geology: 59: 1449, 1452.
Southern Pacific Company (1964b) Minerals for Industry, Vol III - Southern California, 3, 242 pp.: 138.
USGS Miscellaneous Geological Investigations map I-476 (1966): 3 (text).
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 166, 168, 354.
Mineral List
4 entries listed. 3 valid minerals.
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