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Evidence for primitive nebular components in chondrules from the Chainpur chondriteIn view of the fact that the least equilibrated ordinary chondrites contain chondrules that have changed little since the time of their formation in the early solar system, and are therefore excellent indicators of the physical and chemical nature of the solar nebula, 36 chondrules were separated from the Chainpur chondrite and analyzed for 20 elements and petrographic properties. The dominant nebular components found are: (1) a mixture of metal and sulfide whose composition is similar to whole rock metal and sulfide, (2) Ir-rich metal, (3) olivine-rich silicates, (4) pyroxene-rich silicates, and possibly (5) a component containing the more volatile lithophiles. Although etching experiments confirm that chondrule rims are enriched in metal, troilite and moderately volatile elements relative to the bulk chondrules, a large fraction of the volatiles remains in the unetched interior.
Document ID
19830030332
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Grossman, J. N.
(California Univ. Los Angeles, CA, United States)
Wasson, J. T.
(California, University Los Angeles, CA, United States)
Date Acquired
August 11, 2013
Publication Date
June 1, 1982
Publication Information
Publication: Geochimica et Cosmochimica Acta
Volume: 46
Subject Category
Lunar And Planetary Exploration
Accession Number
83A11550
Funding Number(s)
CONTRACT_GRANT: NGR-05-007-329
Distribution Limits
Public
Copyright
Other

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