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Big Blue Mine group (Big Blue group; North Extension Sumner; Jeff Davis; Bull Run; Beauregard; Urbana; Frank; Content; Big Blue-Sumner; Glue Gouge), Lake Isabella, Kernville, Cove District, Kern Co., California, USA

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A former group of Au-Cu-Pb-Ag mines located in sec. 28 and the NW¼ sec. 32, E½ sec. 21, T28S, R33E, MDM, 1½ miles SW of Kernville. Started in 1860.

Mineral List

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

10 entries listed. 9 valid minerals.

Localities in this Region

  • California
    • Kern Co.
      • Cove District
        • Kernville
          • Lake Isabella

The above list 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.


Prout, John W., Jr. (1940), Geology of the Big Blue group of mines, Kernville, California: California Division Mines Report 36: 379-421.

Rocks & Minerals (1943): 18: 234.

Troxel, Bennie Wyatt & P.K. Morton (1962), Mines and mineral resources of Kern County, California: California Division Mines & Geology County Report No. 1, 370 pp.: 97-99, 118, 212.

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 107, 254, 269, 311.

Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 69, 74, 79, 84, 89, 103, 126, 128.

Map No. 122: 136.

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