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Carbynes - Carriers of primordial noble gases in meteoritesFive carbynes (triply bonded allotropes of carbon) have been found by electron diffraction in the Allende and Murchison carbonaceous chondrites: carbon VI, VIII, X, XI, and (tentatively) XII. From the isotopic composition of the associated noble-gas components, it appears that the carbynes in Allende (C3V chondrite) are local condensates from the solar nebula, whereas at least two carbynes in Murchison (C2 chondrite) are of exotic, presolar origin. They may be dust grains that condensed in stellar envelopes and trapped isotropically anomalous matter from stellar nucleosynthesis.
Document ID
19800065676
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Whittaker, A. G.
(Aerospace Corp. El Segundo, CA, United States)
Watts, E. J.
(Aerospace Corp. El Segundo, Calif., United States)
Lewis, R. S.
(Aerospace Corp. El Segundo, CA, United States)
Anders, E.
(Chicago, University Chicago, Ill., United States)
Date Acquired
August 10, 2013
Publication Date
September 26, 1980
Publication Information
Publication: Science
Volume: 209
Subject Category
Lunar And Planetary Exploration
Accession Number
80A49846
Funding Number(s)
CONTRACT_GRANT: NGL-14-001-010
Distribution Limits
Public
Copyright
Other

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