Other
Scientific paper
Dec 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975natur.258..689w&link_type=abstract
Nature, vol. 258, Dec. 25, 1975, p. 689, 690. NASA-supported research.
Other
2
Abundance, Condensates, Meteoritic Composition, Achondrites, Carbonaceous Chondrites, Inclusions, Line Spectra, Mineralogy, Spectrum Analysis
Scientific paper
It is noted that two meteors which exhibited no lines of iron or sodium in their spectra have been tentatively attributed to aubrites in order to explain their lack of iron. It is shown, however, that no meteorites, including aubrites, have simultaneously low abundances of iron and sodium and that possible parent materials other than aubrites must be considered for the observed meteors. Other possible parent materials considered in this letter include melilite and diopside, two minerals containing both Ca and Mg but neither Fe nor Na. It is suggested that meteoroids rich in Ca and Mg but lacking Fe and Na might form a reservoir for the so-called 'lost' elements (Ca, Mg, Al, Ti, the lanthanides, and other refractory elements) which are depleted in ordinary and enstatite chondrites relative to cosmic abundances.
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