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Noble-gas-rich separates from ordinary chondritesAcid-resistant residues were prepared by HCl-HF demineralization of three H-type ordinary chondrites: Brownfield 1937 (H3), Dimmitt (H3, 4), and Estacado (H6). These residues were found to contain a large proportion of the planetary-type trapped Ar, Kr, and Xe in the meteorites. The similarity of these acid residues to those from carbonaceous chondrites and LL-type ordinary chondrites suggests that the same phase carries the trapped noble gases in all these diverse meteorite types. Because the H group represents a large fraction of all meteorites, this result indicates that the gas-rich carrier phase is as universal as the trapped noble-gas component itself. When treated with an oxidizing etchant, the acid residues lost almost all their complement of noble gases.
Document ID
19800038812
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Moniot, R. K.
(California, University Berkeley, Calif., United States)
Date Acquired
August 10, 2013
Publication Date
February 1, 1980
Publication Information
Publication: Geochimica et Cosmochimica Acta
Volume: 44
Subject Category
Lunar And Planetary Exploration
Accession Number
80A22982
Distribution Limits
Public
Copyright
Other

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