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- W1993482887 abstract "Twelve composite core samples from three bore-holes which intersected the entire succession of a phosphorite deposit, in the Western Desert, Egypt, have been analysed for 15 rare earth elements (REEs). X-Ray energy spectrometry was found to be of limited use, being able to determine only yttrium, cerium and lanthanum. Wall-stabilized arc optical emission spectroscopy was adopted in this work and was more effective, yielding a complete set of analytical data for 11 REEs. The ore had an anomalously high REE content. The phosphorite bed had an average thickness of 3 m. The REE vertical distribution revealed clear enrichment in the middle, in the form of “maxima of deposition”, with a noticeable deficiency in the top and bottom layers of the phosphorite bed. Further studies are under way to investigate the significance of these patterns." @default.
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- W1993482887 date "1989-04-01" @default.
- W1993482887 modified "2023-09-27" @default.
- W1993482887 title "Preliminary study on the vertical distribution of rare earths in an Egyptian phosphorite deposit" @default.
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- W1993482887 doi "https://doi.org/10.1016/0022-5088(89)90010-6" @default.
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