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Yamato 981638
Basic information Name: Yamato 981638
     This is an OFFICIAL meteorite name.
Abbreviation: Y-981638
Observed fall: No
Year found: 1998
Country: Antarctica [Collected by National Institute of Polar Research, Japan]
Mass:help 11.4 g
Classification
  history:
NIPR Newsletter:  MN 19  (2010)  Eucrite
Meteoritical Bulletin:  MB 98  (2010)  Eucrite
Recommended:  Eucrite    [explanation]

This is 1 of 515 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 20 Jun 2010
Writeuphelp
Writeup from MN J19:

Yamato 981638 (Y 981638)

Antarctica

Found: 1998

Classification: HED achondrite (Eucrite)

Petrography: The section broadly consists of two portions; coarse-grained (several mm) and finer grained (~0.1-5 mm) granular portion. The coarse-grained portion is texturally similar to Y981617. It consists of pyroxene and plagioclase with minor minerals. Pyroxene is inverted pigeonite.

Geochemistry: Compositions of low-Ca pyroxenes are Fs47-50Wo2-4; plagioclase compositions range An87-91.

Classification: This meteorite is a eucrite.

Data from:
  MB98
  Table 2
  Line 756:
Mass (g):11.39
Class:Eucrite
Weathering grade:
Fayalite (mol%):
Ferrosilite (mol%):48.9 (47.5-50.3)
Classifier:NIPR
Type spec location:NIPR
Main mass:NIPR
Institutions
   and collections
NIPR: Antarctic Meteorite Research Center, National Institute of Polar Research, 10-3 Midori-cho, Tachikawa, Tokyo 190-8518, Japan; Website (institutional address; updated 9 Dec 2013)
Catalogs:
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 ,19, (2010-03)
Published in Meteoritical Bulletin, no. 98, MAPS 45, 1530-1551 (2010)
Find references in NASA ADS:
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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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