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Yamato 981956
Basic information Name: Yamato 981956
     This is an OFFICIAL meteorite name.
Abbreviation: Y-981956
Observed fall: No
Year found: 1998
Country: Antarctica [Collected by National Institute of Polar Research, Japan]
Mass:help 21.6 g
Classification
  history:
NIPR Newsletter:  MN 20  (2011)  Diogenite
Meteoritical Bulletin:  MB 99  (2011)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 522 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 26 May 2011
Writeuphelp
Writeup from MN J20:
Y981956 and Y002875
Diogenite

These sections are similar to Y981247 and Y981582 in mineral chemistry and texture. Thus, these meteorites are paired. The sections show an aggregate of very fine-grained needles and wedges of orthopyroxene which are broadly aligned. Miner minerals include Fe-metal and troilite. Pyroxene compositions are Wo1.9-2.2Fs22.9-25.1, and wt Fe/MnO = ~31. These meteorites are unbrecciated diogenites.
Data from:
  MB99
  Table 0
  Line 0:
Date:1998
Mass (g):21.64
Pieces:1
Class:Diogenite
Ferrosilite (mol%):24.0 (22.9-25.1)
Classifier:A. Yamaguchi
Type spec mass (g):21.64
Type spec location:NIPR
Main mass:NIPR
Comments:Paired with Y981247
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)
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References: Published in Meteorite newsletter : Japanese collection of Antarctic meteorites /Meteorite newsletter : Japanese collection of Antarctic meteorites ,20,1-19 (2011-03)
Published in Meteoritical Bulletin, No. 99, April 2012, MAPS 47, E1-E52 (2012) [published online only]
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Geography:

Antarctica
Coordinates:Unknown.

Statistics:
     This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names)
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