Computer Science
Scientific paper
Jan 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992chjss..12...63f&link_type=abstract
Chinese Journal of Space Science (ISSN 0254-6124), vol. 12, no. 1, p. 63-70.
Computer Science
Abundance, Carbonaceous Chondrites, Meteoritic Composition, Neutron Activation Analysis, Rare Earth Elements, Chemical Composition, Iron Oxides, Solar System Evolution
Scientific paper
The chemical compositions of the Ningqiang carbonaceous chondrite matrix and a dark rim are analyzed with the instrumental neutron activation method. The results indicate that there are more abundant light REE and chalcophile elements in the matrix of Ningqiang than in the whole rock sample of Ningqiang, and it roughly exhibits a similarity of REE model between the Ningqiang and Allende matrices. The difference between the dark rim and Ningqiang matrix is that the former has richer FeO and poorer refractory elements. It is deduced that the meteorite matrix and the dark rim came from different source material regions of the solar nebula. The event related to the formation of the dark rim might ever have taken place many times in the different regions of the solar nebula.
Chai Zhi-Fang
Fang Hong
Feng Xi-Zhang
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