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  Yamato 792947, 793408 and 82038: The most primitive H chondrites, with abundant refractory inclusions

Kimura, A., Hiyagon, H., Palme, H., Spettel, B., Wolf, D., Clayton, R. N., et al. (2002). Yamato 792947, 793408 and 82038: The most primitive H chondrites, with abundant refractory inclusions. Meteoritics and Planetary Science, 37(10), 1417-1434.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-907C-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-907D-C
Genre: Journal Article
Alternative Title : Meteorit. Planet. Sci.

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 Creators:
Kimura, A., Author
Hiyagon, H., Author
Palme, H., Author
Spettel, B.1, Author              
Wolf, D., Author
Clayton, R. N., Author
Mayeda, T. K., Author
Sato, T., Author
Suzuki, A., Author
Kojima, H., Author
Affiliations:
1Cosmochemistry, Max Planck Institute for Chemistry, Max Planck Society, escidoc:1826294              

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 Abstract: In this paper we report petrological and chemical data of the unusual chondritic meteorites Yamato (Y)-792947, Y-93408 and Y- 82038. The three meteorites are very similar in texture and chemical composition, suggesting that they are pieces of a single fall. The whole-rock oxygen isotopes and the chemical compositions are indicative of H chondrites. In addition, the mineralogy, and the abundances of chondrule types, opaque minerals and matrices suggest that these meteorites are H3 chondrites. They were hardly affected by thermal and shock metamorphism. The degree of weathering is very low. We conclude that these are the most primitive H chondrites, H3.2-3.4 (S1), known to date. On the other hand, these chondrites contain extraordinarily high amounts of refractory inclusions, intermediate between those of ordinary and carbonaceous, chondrites. The distribution of the inclusions may have been highly heterogeneous in the primitive solar nebula. The mineralogy, chemistry and oxygen isotopic compositions of inclusions studied here are similar to those in CO and E chondrites.

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Language(s): eng - English
 Dates: 2002-10
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 18202
ISI: 000178877100010
 Degree: -

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Title: Meteoritics and Planetary Science
  Alternative Title : Meteorit. Planet. Sci.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 37 (10) Sequence Number: - Start / End Page: 1417 - 1434 Identifier: ISSN: 1086-9379