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Yamato 983730
Basic information Name: Yamato 983730
     This is an OFFICIAL meteorite name.
Abbreviation: Y-983730
Observed fall: No
Year found: 1998
Country: Antarctica [Collected by National Institute of Polar Research, Japan]
Mass:help 26.5 g
Classification
  history:
NIPR Newsletter:  MN 21  (2012)  H4-5
Meteoritical Bulletin:  MB 101  (2012)  H4-5
Recommended:  H4-5    [explanation]

This is 1 of 77 approved meteorites classified as H4-5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 15 Jun 2012
Writeuphelp
Writeup from MB 101:

Yamato 983730 (Y 983730)

Antarctica

Found: 1998

Classification: Ordinary chondrite (H4-5)

Petrography: (A. Yamaguchi, N. Imae, M. Kimura, and H. Kojima, NIPR) A half of the PTS is type 4 ordinary chondrite which is in contact with type 5 lithology with a sharp boundary. The type 4 area shows a well-defined chondritic texture whereas in the type 5 area the chondrule outline is less clear and the matrix is recrystallized.

Geochemistry: On the basis of the olivine and pyroxene compositions (Fa18-21, Fs15-20), both lithologies belong H group. Thus, this meteorite is a genomict breccia of type 4 and 5 ordinary chondrites.

Data from:
  MB101
  Table 0
  Line 0:
Date:1998
Mass (g):26.49
Pieces:1
Class:H4-5
Weathering grade:B
Fayalite (mol%):19.3 (18.2-21.2)
Ferrosilite (mol%):16.8 (14.8-19.9)
Classifier:A. Yamaguchi, N. Imae, M. Kimura, and H. Kojima, NIPR
Type spec mass (g):26.49
Type spec location:NIPR
Main mass:NIPR
Comments:genomict breccia; 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 39173 approved meteorites from Antarctica (plus 5051 unapproved names)

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