Other
Scientific paper
Dec 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979icar...40..446l&link_type=abstract
Icarus, vol. 40, Dec. 1979, p. 446-454. Research supported by the California Institute of Technology;
Other
14
Carbonaceous Chondrites, Meteoritic Composition, Refractory Materials, Abundance, Aluminum, Chromium, Fractionation, Magnesium, Planetary Composition, Silicon, Trace Elements
Scientific paper
It is noted that Cr, Mg, and Si are fractionated in chondritic material along with, but to a lesser extent than, a large group of more refractory elements. These patterns are reexamined with the reasoning that this might imply some unique distribution at the time of fractionation. It is shown that apparently two distinct fractionization patterns can be resolved: one involving ordinary and enstatite chondrites and the other involving carbonaceous chondrites, the earth, the moon, and the eucrite parent body. It is noted that the two trends intersect at C1 composition. Attention is given to the range in which the largest fraction of planetary matter condenses. It is concluded that the appearance of large amounts of condensed materials is conceivably in some way related to the fractionization process, although the exact relationship cannot be specified.
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