Possible europium-normal rare-earth abundances estimated from the lunar samples,and the terrestrial analogue |
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Authors: | Akimasa Masuda Tsuyoshi Tanaka |
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Institution: | (1) Department of Chemistry, Science University of Tokyo, Kagurazaka, Shinjuku-ku, Tokyo, Japan;(2) Geological Survey of Japan, Hisamoto, Kawasaki, Japan |
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Abstract: | From the mathematical analysis of the rare-earth data on some of the Apollo 12 samples studied by Hubbard et al. (1971), the possible europium-normal primitive rare-earth pattern, in which europium is normal with respect to the adjacent rare-earth elements, has been estimated. A fact that the igneous rocks (Japanese geosynclinal basalts) appearing to reflect the analogous effect occur locally on the earth enhances our interests in the pattern resulting from the above estimation. |
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