ON THE BEHAVIOR OF RARE EARTH ELEMENTS IN FLUOR-BEARING ENVIRONMENT

In greysen deposits a close genetic bond exists between rare earth elements, fluor, and such elements as Al, Fe, Zr, Th, Sn, Be, and others. Such a bond may be explained by the formation of complicate fluoride complexes of the STAMeF!STATRF/sub 4!/i type. Being sufficiently mobile under acid conditions, they desintegrate easily in alkaline conditions. (auth)