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Yamato 980459
Basic information Name: Yamato 980459
     This is an OFFICIAL meteorite name.
Abbreviation: Y-980459
Observed fall: No
Year found: 1998
Country: Antarctica [Collected by National Institute of Polar Research, Japan]
Mass:help 82.5 g
Classification
  history:
Meteoritical Bulletin:  MB 87  (2003)  SNC
MetBase:  v. 7.1  (2006)  Shergottite-basaltic (ol phyric)
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 191 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Writeuphelp
Writeup from MN J11(1):

Y980459

The section shows a porphyritic texture with large subhedral phenocrysts of olivine (< 1 mm) in a groundmass composed of subhedral clinopyroxene (~0.1-0.2 mm) and dark glassy interstitial materials. There are also grains of oxide minerals (< 0.1 mm). Compositions of olivine have a range Fo84.2-74.1, and those of pyroxene En77.9-59.3Wo2.5-14.0. The oxygen isotopic composition (δ18O = +4.31‰, δ17O= +2.52‰, Δ17O = +0.28) (R.N. Clayton, pers. comm., 2001) indicates that this rock may be genetically related to SNC meteorites.


Writeup from MN J21:

Yamato 980459

Geochemistry: Oxygen isotope composition (R. Clayton and T. Mayeda, UChi): δ18O = 4.31, δ17O = 2.52, Δ17O = 0.28

Data from:
  MB87
  Table A2
  Line 170:
Mass (g):82.46
Class:SNC
Weathering grade:A
Fayalite (mol%):15.8-25.9
Ferrosilite (mol%):16.8-26.7
Plots: O isotopes:  
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References: Published in Meteorite newsletter : Japanese collection of Antarctic meteorites / Meteorite newsletter : Japanese collection of Antarctic meteorites ,11(1),1-49 (2002-10)
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. 87, MAPS 38, A189-A248 (2003)
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Geography:

Antarctica
Coordinates:
     Recommended::   (72° 5' 53"S, 35° 14' 34"E)

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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