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Yamato 791491
Basic information Name: Yamato 791491
     This is an OFFICIAL meteorite name.
Abbreviation: Y-791491
Observed fall: No
Year found: 1979
Country: Antarctica [Collected by National Institute of Polar Research, Japan]
Mass:help 31.6 g
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  Lodranite
NIPR Catalogue:  2000 Edition  (2000)  Lodranite
MetBase:  v. 7.1  (2006)  Lodranite
Recommended:  Lodranite    [explanation]

This is 1 of 83 approved meteorites classified as Lodranite.   [show all]
Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites
Writeuphelp
Writeup from MN J7(1):

Y-791491, 51-1: Lodranite

          PTS shows a coarse-grained aggregate (1 mm in size) with granular texture, consisting mainly of olivine (42 vol%), orthopyroxene (28%) and Ni-Fe-troilite 30%, with minor amounts of Aug (0.1%), plagioclase (0.3%), Cl-apatite, chromite (0.1%) and merrillite (0.2%). Nickel-iron, plagioclase, and augite fill the interstices of mafic silicates and often show concave, rounded boundaries. Plagioclase occurs as a film mantling an olivine crystal and fills interstices of olivine and orthopyroxene together with merrillite, metal, and augite. The textures and mineral distribution are the same as those of the Y-791493 lodranite. Chemical compositions of olivine cores are uniform throughout the PTS. Chemical compositions of orthopyroxene are roughly uniform for major elements, but the CaO contents are variable within a crystal.

Catalogs:
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 40719 approved meteorites from Antarctica (plus 4494 unapproved names)
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