722 



UNITED STATES MINERAL RESOURCES 



Mertie, J. B., Jr., 1958, Zirconium and hafnium in the south- 

 eastern Atlantic States: U.S. Geol. Survey Bull. 1082-A, 

 p. 1-28. 



Poldervaart, Arie, 1955, Zircons in rocks — Pt. 1, Sedimentary 

 rocks: Am. Jour. Sci., v. 253, no. 8, p. 433-461. 



1956, Zircons in rocks — Pt. 2, Igneous rocks: Am. 



Jour. Sci., V. 254, no. 9, p. 521-554. 



Pratt, J. H., 1916, Zircon, monazite, and other minerals used 

 in the production of chemical compounds in the manu- 

 facture of lighting apparatus : North Carolina Geol. 

 and Econ. Survey Bull. 25, 120 p. 



Ringwood, A. E., 1955, The principles governing trace ele- 

 ment behavior during magmatic crystallization — Pt. 2, 

 The role of complex formation: Geochim. et Cosmochim. 

 Acta, V. 7, p. 242-254. 



Ronov, A. B., Vainshtein, E. E., and Tuzova, A. M., 1961, 

 Geochemistry of .hafnium, zirconium and some other 

 hydrolyzate elements in clays: Geochemistry, no. 4, p. 

 343-355. 



Saxena, S. K., 1966, Evolution of zircons in sedimentary and 

 metamorphic rocks: Sedimentology, v. 6, p. 1-33. 



Sorensen, H., 1970a, Low-grade uranium deposit in agpaitic 

 nepheline syenites, south Greenland, i)i Uranium ex- 

 ploration geology: Internat. Atomic Energy Agency, 

 Panel on Uranium Exploration Geology, Vienna, 1970, 

 Proc, p. 151-159. 



1970b, Occurrence of uranium in alkaline igneous 



rocks, in Uranium exploration geology: Internat. 

 Atomic Energy Agency, Panel on Uranium Explora- 

 tion Geology, Vienna, 1970, Proc, p. 161-168. 



South African Mining and Engineering Journal, 1970, On 

 the trail of zirconium oxide: South African Mining and 

 Eng. Jour., v. 81, pt. 1, no. 4034, p. 1085, 1087, 1089, 

 1091. 



Stamper, J. W., and Chin, Edmond, 1970a, Hafnium, in 

 Mineral facts and problems, 1970: U.S. Mines Bull. 650, 

 p. 587-594. 



1970b, Zirconium, in Mineral facts and problems, 



1970: U.S. Bur. Mines Bull. 650, p. 825-835. 



Stow, S. H., 1968, The heavy minerals of the Bone Valley 

 Formation and their potential value: Econ. Geology, v. 

 63, no. 8, p. 973-975. 



Taylor, S. R., 1965, The application of trace element data 



to problems in petrology, in Ahrens, L. H., Press, Frank, 

 Runcorn, S. K., and Urey, H. C, eds., Physics and 

 chemistry of the earth: Pergamon Press, v. 6, p. 133- 

 213. 



Tolbert, G. E., 1966, The uraniferous zirconium deposits of 

 the Pogos de Caldas Plateau, Brazil: U.S. Geol. Survey 

 Bull. 1185-C, 28 p. 



Turekian, K. K., and Wedepohl, K. H., 1961, Distribution 

 of the elements in some major units of the earth's 

 crust: Geol. Soc. America Bull., v. 72, p. 175-192. 



U.S. Bureau of Mines, 1944-70, Minerals Yearbooks. 



1969, Titanium minerals — Uruguay: U.S. Bur. Mines 



Mineral Trade Notes, v. 66, no. 6, p. 25-26. 



1972, Commodity data summaries [zirconium and 



hafnium section] : p. 166-167. 



Vainshtein, E. E., Ginzburg, A. J., and Shevaleyevskii, I. D., 

 1959, The Hf/Zr ratio in zircons from granite pegma- 

 tites: Geochemistry, no. 2, p. 151-157. 



Vlasov, K. A., 1966a, Geochemistry of rare elements, v. 1, 

 of Geochemistry and mineralogy of rare elements and 

 genetic types of their deposits : Israel Program Sci. 

 Translations, IPST no. 2123, 945 p. 



1966b, Mineralogy of rare elements, v. 2, of Geo- 

 chemistry and mineralogy of rare elements and genetic 

 types of their deposits: Israel Program Sci. Transla- 

 tions, IPST no. 2169, 688 p. 



Weast, R. C, Selby, S. M., and Hodgman, C. D., 1965, Hand- 

 book of chemistry and physics, 46th ed. : Cleveland, 

 Ohio, Chemical Rubber Co., p. B-3, B-27, B-28, B-63, 

 and B-64. 



Wedow, Helmuth, Jr., 1967, The Morro do Ferro thorium 

 and rare-earth ore deposit, Poqos de Caldas district, 

 Brazil: U.S. Geol. Survey Bull. 1185-D, 34 p. 



Wedow, Helmuth, Jr., and Hobbs, R. G., 1968, Zirconium, in 

 Mineral resources of the Appalachian region: U.S. 

 Geol. Survey Prof. Paper 580, p. 361-364. 



Wessel, F. W., 1958, Zirconium raw materials supply, in 

 United Nations, Survey of raw material resources: In- 

 ternat. Conf. Peaceful Uses Atomic Energy, 2d, Geneva, 

 1958, Proc., v. 2, p. 17-20. 



Williams, Lloyd, 1964, Titanium deposits in North Carolina: 

 North Carolina Div. Mineral Resources Inf. Circ. 19, 

 51 p. 



