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Yamato 983890
Basic information Name: Yamato 983890
     This is an OFFICIAL meteorite name.
Abbreviation: Y-983890
Observed fall: No
Year found: 1998
Country: Antarctica [Collected by National Institute of Polar Research, Japan]
Mass:help 10.8 g
Classification
  history:
NIPR Newsletter:  MN 21  (2012)  Ure, poly
Meteoritical Bulletin:  MB 101  (2012)  Ureilite-pmict
Recommended:  Ureilite-pmict    [explanation]

This is 1 of 30 approved meteorites classified as Ureilite-pmict.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 15 Jun 2012
Writeuphelp
Writeup from MB 101:

Yamato 983890 (Y 983890)

Antarctica

Found: 1998

Classification: Ureilite (polymict)

Petrography: (A. Yamaguchi, N. Imae, M. Kimura, and H. Kojima, NIPR) This PTS displays a polymict breccia of polycrystalline clasts of pyroxene and olivine, unrecrystallized and recrystallized mineral fragments, sulfides, dark materials (up to ~2 mm) set in a clastic matrix. Finely (a few to several μm) recrystallized clasts contain laths of black phases (graphite?). Most large silicate clasts are texturally similar to those of normal monomict ureilites. Dark clasts consist of very-fine grained materials with minor amounts of sulfide minerals.

Classification: This meteorite is a polymict ureilite.

Data from:
  MB101
  Table 0
  Line 0:
Date:1998
Mass (g):10.79
Pieces:1
Class:Ureilite-pmict
Weathering grade:C
Fayalite (mol%):19.4 (3.3-28.0)
Ferrosilite (mol%):15.3 (14.9-15.7)
Classifier:A. Yamaguchi, N. Imae, M. Kimura, and H. Kojima, NIPR
Type spec mass (g):10.79
Type spec location:NIPR
Main mass:NIPR
Comments:Submitted by A. Yamaguchi
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 ,21,1-33 (2012-06)
Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
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Geography:

Antarctica
Coordinates:Unknown.

Statistics:
     This is 1 of 43352 approved meteorites from Antarctica (plus 3802 unapproved names)

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