Other
Scientific paper
Dec 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982polre..25..145s&link_type=abstract
(Symposium on Antarctic Meteorites, 7th, Tokyo, Japan, Feb. 19, 20, 1982) National Institute of Polar Research, Memoirs, Special
Other
2
Meteorites, Antarctic Meteorites, Rare Earth Elements, Characteristics, Eucrites, Samples, Meteorite, Laboratory Studies, Composition
Scientific paper
The rare-earth element (REE) Ba, Sr and Rb abundances were precisely determined for three Antarctic eucrites (ALH-78132, Y-790260 and Y-790266), Y-7308 howardite, Y-790143 LL chondrite, Pasamonte eucrite, and plagioclase and clinopyroxene fractions of the Y-790266 eucrite. A positive Ce anomaly and Yb-Lu deviation from smoothness characterize REE patterns of Antarctic eucrites. These REE features are commonly observed in Antarctic eucrites which have been analyzed thus far by means of the mass-spectrometric isotope-dilution method. The degrees of Ce and Yb-Lu deviations are small or substantially absent for almost all of non-Antarctic eucrites and Antarctic meteorites other than eucrites. Discussions are conducted concerning the possible implications of the Ce anomaly and Yb-Lu deviation observed in Antarctic eucrites.
Masuda Akimasa
Shimizu Hisashi
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