Computer Science
Scientific paper
Nov 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997m%26ps...32..753j&link_type=abstract
Meteoritics & Planetary Science, vol. 32, no. 6, pages 753-760
Computer Science
13
Scientific paper
We address the origin of "dusty", metal-bearing relict olivine grains in chondrules. It has been suggested previously that these grains may be either primitive condensates, or that they are derived from a previous generation of chondrules. In this paper we infer the original composition of dusty olivine grains, before they were reduced, and examine the possibility that they were derived from a previous generation of chondrules. Original compositions of dusty grains, including their estimated initial FeO contents and their minor element contents, match closely with compositions of olivines from chondrules in unequilibrated chondrites. In addition, the cores of some dusty grains are unaltered and the compositions of these cores are also consistent with a chondrule origin. We therefore conclude that a derivation from a previous generation of chondrules is a plausible origin for these relicts. If this is the case, it is additional evidence for the importance of recycling of chondrule material in the chondrule-forming region.
Danielson Lisa R.
Jones Rhian H.
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