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Yamato 791492
Basic information Name: Yamato 791492
     This is an OFFICIAL meteorite name.
Abbreviation: Y-791492
Observed fall: No
Year found: 1979
Country: Antarctica [Collected by National Institute of Polar Research, Japan]
Mass:help 41.1 g
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  Howardite
NIPR Catalogue:  2000 Edition  (2000)  Howardite
MetBase:  v. 7.1  (2006)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 398 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Writeuphelp
Writeup from MN J7(1):

Y-791492, 81-1: Howardite

          A thin section shows complex breccia of angular fragments up to 2 mm long, of orthopyroxene, inverted pigeonite, pigeonite, olivine, plagioclase, chromite, ilmenite, silica, and other opaque minerals set in a matrix of comminuted mineral fragments. Lithic clasts are rather rare in comparison with other Yamato-79 howardites. The matrix does not show rusty staining as was observed in Y-791208. Many orthopyroxene fragments do not show the exsolution of augite that was observed in diogenites, but they may be similar to diogenites. One orthopyroxene fragment has a small chromite attached to the edge. Two subrounded fragments of cumulate eucrite pyroxene include oriented blebby inclusions of augite. Fe-rich eucritic pigeonite shows exsolution of augite on (001). Three small eucritic lithic clasts were observed in which pigeonite also shows exsolution.

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Search for this meteorite in the NIPR database (Japan):   
References: Published in Meteorites news : Japanese collection of Antarctic meteorites / Meteorites news : Japanese collection of Antarctic meteorites ,7(1),1-94 (1998-06)
Never published in the Meteoritical Bulletin
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (71° 30'S, 35° 40'E)
     Recommended::   (71° 30'S, 35° 40'E)

Statistics:
     This is 1 of 40759 approved meteorites from Antarctica (plus 4494 unapproved names)
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