BERYLLIUM 



93 



should be emphasized that the diagnostic character- 

 istics given above pertain to most, but not all dis- 

 tricts. Beryllium districts may well be found that 

 do not conform to these generalizations, but their 

 potential cannot now be estimated. 



Beryllium minerals of hydrothermal deposits sel- 

 dom can be recognized readily in the field, and the 

 deposits themselves are likely to be covered by soil. 

 Hence, they are most likely to be found by a study 

 of regional geology, follovi^ed by geochemical surveys 

 of the most promising areas. Resources now known 

 are large, but small-scale search is justified for de- 

 posits that might be better economically than those 

 that are now known. 



SELECTED REFERENCES 



Beus, A. A., 1966, Geochemistry of beryllium: San Francisco, 



W. H. Freeman and Co., 401 p. 

 Cameron, E. N., Jahns, R. H., McNair, A. H., and Page, 



L. R., 1949, Internal structure of granitic pegmatites: 



Econ. Geology Mon. 2, 115 p. 

 Everest, D. A., Napier, E., North, A. A., and Wells, R. A., 



1965, Economic assessment of four processes for the pro- 



duction of beryllium hydroxide from flotation concen- 

 trates: Inst. Mining and Metallurgy Trans., v. 74, (Bull. 

 707), p. 869-895. 



GrifRtts, W. R-, 1964, Beryllium resources of the tin-spodu- 

 mene belt, North Carolina: U.S. Geol. Survey Circ. 309, 

 12 p. 



Heindl, R. A., 1970, Beryllium, in Mineral facts and prob- 

 lems: U.S. Bur. Mines Bull. 650, p. 489-501. 



Mulligan, Robert, 1968, Geology of Canadian beryllium de- 

 posits: Canada Geol. Survey Econ. Geology Rept. 23, 

 109 p. 



Sainsbury, C. L., 1969, Geology and ore deposits of the 

 central York Mountains, western Seward Peninsula, 

 Alaska: U.S. Geol. Survey Bull. 1287, 101 p. 



Shawe, D. R., and Bernold, Stanley, 1966, Beryllium content 

 of volcanic rocks: U.S. Geol. Survey Bull. 1214-C, 11 p- 



Staatz, M. H., and Carr, W. J., 1964, Geology and mineral 

 deposits of the Thomas and Dugway Ranges, Juab and 

 Tooele Counties, Utah : U.S. Geol. Survey Prof. Paper 

 415, 188 p. 



Stokinger, H. E., 1966, Beryllium — its industrial hygiene as- 

 pects: New York, Acad. Press, 394 p. 



U.S. Bureau of Mines, 1953, Supply-demand position, in 

 Materials survey — Beryllium: U.S. Govt. Printing Office, 

 p. IV, 1-21. 



1953-1969, Minerals yearbooks. 



