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Red Boulder No. 1 prospect (Unnamed REE-U-Th occurrence [1]), One Hole Spring, Bighorn Mts, San Bernardino Co., California, USA

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Latitude & Longitude (WGS84): 34° 20' 11'' North , 116° 39' 36'' West
Latitude & Longitude (decimal): 34.3363876343, -116.660003662
An U-Th-REE occurrence/prospect located in sec. 22, T3N, R3E, SBM, 2.4 km (1.5 miles) W of One Hole Spring (spring), along an unnamed canyon on the N margin of the San Bernardino Mountains. MRDS database stated accuracy for this location is 10 meters.

NOTE: Pemberton (1983) presents this locality as an unnamed REE-U-Th occurrence.

Local rocks include Precambrian rocks, undivided, unit 2 (Mojave Desert and Transverse Ranges).

Workings include unspecified surface openings.

Mineral List

18 entries listed. 13 valid minerals.

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.


Hewett, Donnel Foster, Stone, J., and Levine, H. (1957) Brannerite from San Bernardino County, California. American Mineralogist: 42: 30-38.

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 113.

Dibblee, T.W., Jr. (1967b) Geologic map of the Old Woman Spring quadrangle, San Bernardino County, California. USGS Miscellaneous Geological Investigation Map I-518, with text: 4.

U.S. Bureau of Mines Open-File Report MLA 107-82 (1982): No. 4, Appendix A: 12, figure 2.

Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 180.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10189620.

U.S. Bureau of Mines, Minerals Availability System (MAS) file #0060712566.

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