Rare-Earth Elements in Tektites

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Science  15 Mar 1963:
Vol. 139, Issue 3559, pp. 1056-1058
DOI: 10.1126/science.139.3559.1056


The rare-earth element content of three tektites has been determined by neutron activation analysis. The relative abundance patterns are all nearly alike and are identical to the pattern characteristic of well-differentiated terrestrial sediments. Possible consequences of finding this pattern in truly extraterrestrial matter are considered.