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On the siting of noble gases in E-chondritesFractions of six E-chondrites were separated by density, grain size, and chemical resistance to determine the siting of noble gases. The samples were taken from the Qingzhen (E3), Indarch (E4), Abee and Saint Saveur (E4-5), and Yilmia and North West Forrest (E6) meteorites. The Ar-rich component of the E6s was concentrated in the enstatite-rich fraction. This subsolar component was resistant to HCl and HNO3 treatment, but could be partially dissolved by HF, implying that the subsolar component is located in the enstatite. The noble gases were transported there by metamorphism. Xe-129 was found in the same regions in the E6s, but was in areas associated with chondrules in the E4s. Additionally, the carbon-rich fraction of the E4 sample displayed Xe and Ne/CCF-Xe isotopic ratios similar to that found in C-chondrites. E3 and E4 primordial gases were analogous, with no subsolar contribution.
Document ID
19830035138
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Crabb, J.
(Chicago Univ. Chicago, IL, United States)
Anders, E.
(Chicago, University Chicago, IL, United States)
Date Acquired
August 11, 2013
Publication Date
November 1, 1982
Publication Information
Publication: Geochimica et Cosmochimica Acta
Volume: 46
Subject Category
Lunar And Planetary Exploration
Accession Number
83A16356
Funding Number(s)
CONTRACT_GRANT: NGL-14-001-010
Distribution Limits
Public
Copyright
Other

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