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

Locality type:Prospect
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
References
References:Hewett, Donnel Foster, Stone, J., and Levine, H. (1957) Brannerite from San Bernardino County, California. American Mineralogist: 42: 30-38; 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; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 180.
Associated Minerals:
Associates:Brannerite
Euxenite-(Y)
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Red Boulder No. 1 prospect (Unnamed REE-U-Th occurrence [1]), One Hole Spring, Bighorn Mountains, San Bernardino Co., California, USA
Nearest other occurrences of Biotite
1.4km (0.9 miles) Uranus group (Uranus claims), Rattlesnake Spring, Bighorn Mountains, San Bernardino Co., California, USA
7.4km (4.6 miles) Martin prospects, One Hole Spring, Bighorn Mountains, San Bernardino Co., California, USA
9.2km (5.7 miles) Rock Corral, Landers, San Bernardino Co., California, USA
10.8km (6.7 miles) Lucky Seven claim, Rimrock, Morongo District (Lone Valley District), San Bernardino Mountains, San Bernardino Co., California, USA
33.1km (20.6 miles) Unnamed U-Th-REE prospects [1], Forest Falls (Fallsvale; Fallsville; Forest Home), San Bernardino Mountains, San Bernardino Co., California, USA
34.4km (21.4 miles) White Knob Quarry, Lucerne Valley, Lucerne Valley Limestone District, San Bernardino Co., California, USA
35.4km (22.0 miles) St. Patrick's group (St. Patrick claim; Alger Creek claims), Forest Falls (Fallsvale; Fallsville; Forest Home), San Bernardino Mountains, San Bernardino Co., California, USA
38.5km (23.9 miles) Unnamed Piemontite occurrence [1] (San Gorgonio Pass), Whitewater (White Water), San Bernardino Mountains, Riverside Co., California, USA
39.4km (24.5 miles) Unnamed pegmatite [1], Whitewater (White Water), San Bernardino Mountains, Riverside Co., California, USA
42.2km (26.2 miles) Desert Gold claims, Whitewater (White Water), San Bernardino Mountains, Riverside Co., California, USA
 
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