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Yamato 984028
Basic information Name: Yamato 984028
     This is an OFFICIAL meteorite name.
Abbreviation: Y-984028
Observed fall: No
Year found: 1998
Country: Antarctica [Collected by National Institute of Polar Research, Japan]
Mass:help 12.3 g
Classification
  history:
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 260 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 8 Aug 2008
Writeuphelp
Writeup from MN J17:
Sample Name: Yamato 984028 Location: Yamato Mountains
Dimensions (cm): 2.8 × 2.4 × 1.7 Weight (g): 12.34
Weathering: A Fracturing: A
Meteorite Type: Lherzolitic Shergottite  

Macroscopic Description

This is a subrounded stone with some shiny black fusion crust on one plane surface. Exposed interior shows a greenish, fine-grained granular texture. Some shock melt veins are observed.

Petrographic Description

The section (51-1) shows a typical poikilitic texture. Large pyroxene oikocrysts enclose rounded olivines and chromites. Small amounts of maskelynite are present. A shock melt vein (400 µm in width) cutting across the middle of the section is observed. Low-Ca pyroxene has a mean composition of Fs22.4Wo3.8. A mean composition of olivine is Fa31.6. The texture and the chemical compositions of constituent minerals indicate that this meteorite is a lherzolitic shergottite.

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Search for this meteorite in the NIPR database (Japan):   
References: Published in Meteorite newsletter : Japanese collection of Antarctic meteorites /Meteorite newsletter : Japanese collection of Antarctic meteorites ,17, (2008-08)
Never published in the Meteoritical Bulletin
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Geography:

Antarctica
Coordinates:Unknown.

Statistics:
     This is 1 of 40849 approved meteorites from Antarctica (plus 4494 unapproved names)

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