Abstract
Twelve zircon separates from diverse geological settings in peninsular India have been analyzed for their Zr, Hf, Sc, REE, Th and U contents employing neutron activation techniques. The whole rock samples of acid charnockite and a related rock of syenitic composition were also analyzed for these elements after separation of zircons. The study reveals that 1. a) the zircons exhibit a wide range of variation in elemental abudances and their ratios, 2. b) their chondritic normalised REE patterns exhibit negative or positive Ce and negative Eu anomalies in addition to smooth HREE enriched patterns without anomalies, and 3. c) there are significant differences in the REE partition coefficients of zircons from the charnockite and the associated syenite. The overall elemental abundances and REE patterns of the zircons could be explained in terms of crystallochemical factors, bulk compositional differences of parent melts and paragenetic histories.
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