Search for Al-26 effects in the Allende FUN inclusion C1

Details Search for Al-26 effects in the Allende FUN inclusion C1 Search for Al-26 effects in the Allende FUN inclusion C1

Sep 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978georl...5..807e&link_type=abstract

Geophysical Research Letters, vol. 5, Sept. 1978, p. 807-810.

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16

Aluminum 26, Carbonaceous Chondrites, Fractionation, Inclusions, Magnesium Isotopes, Meteoritic Composition, Abundance, Chondrule, Mineralogy, Pyroxenes, Solar Corona, Spinel, Magnesium, Inclusions, Chlorine, Mineralogy, Crystals, Solar System, Plagioclase, Anomalies, Samples, Meteorite, Abundance, Composition, Fractionation, Isotopes, Isotopic Ratios, Aluminum

Scientific paper

The Mg isotopic composition of major and minor mineral phases in the Allende inclusion C1 is reported. The results are analyzed in order to establish whether the Mg isotopic composition is the same in different phases and whether Al-26 is present in a sample which exhibited fractionation and unknown nuclear (FUN) effects on other elements. It is found that a small Mg-26 excess exists in C1 and is correlated with the Al-27/Mg-24 ratio, indicating that Al-26 was present in C1 together with the more general nuclear anomalies. The results also reveal that isotopic homogeneity of Mg in Mg-rich phases in C1 is evident in both bulk samples and single microscopic crystals.

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