 | | Book | | Hydrothermal and Pegmatitic Element Segregation to Form U-Parageneses 230 Chapter 37 Some Aspects of the Role...hydrothermal paragenetic associations, group A = U, (Th), Pb, As, Sb, Bi, Se, Te, (Mo, Sn) and group...for the pegmatitic uranium parageneses group C = U, (Th), Zr, Hf, Ti, Nb, Ta1 and the REE. It is interesting...shales, hornfels and granites of the Harzburg district, showed that the amount of boron decreases from...of the granite-gneissic Precambrian rocks of the region and of manganese mobilized by leaching of basalts |  | | Book (edition) | | lo thc D1rccto1 of Spencil Sdles, McCrnw-Hi/1. 11 West 19th Street New York, NY 1001 1 Or contad ¡¡ow local.... . . . . . . -. . . Vowels a a a e e 1 6 6 u u a aú 01 y-a yil as as as as as as as as as as as...systern. . . ... .... 333 Conversion factors for the U S Custo rnary Syst ern , rnetric systern . and lnternat1onal...which a lava river moves down and away from a central vent to teed an aa lava flow ( a'a 'chan al 1 aa...valleys in the Gulf of Mexico between Cuba and Key West f 'ag ;:i se 'va l ez) 4 ailsyte agate Si O A |
|
