Abstract
TANAKA et al.1 have suggested that there must be barium-rich micro-components in the Allende meteorite. We have confirmed this prediction by discovery of barium-rich particulates (see ref. 2). Figure 1 shows diffuse distribution of Ba-rich particles as well as their clusters; each of apparent particles seems to be composed of finer particulates probably of submicron size. Tanaka and Okumura2 showed that the Ba-rich spots are also high in content of titanium. Figure 2 shows the areal overlapping of the distribution of Ba with that of Ti. Relatively sparse dots for Ti are due to shorter scanning time than for Ba.
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MASUDA, A., TANAKA, T. How did barium titanate particulates stick together in the nebula?. Nature 267, 231–233 (1977). https://doi.org/10.1038/267231b0
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DOI: https://doi.org/10.1038/267231b0
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