Meteoritical Bulletin: Entry for Yamato 980459

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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: 82.5 g

Classification
history:

NIPR Newsletter:	MN 11(1)	(2002)	Martian (shergottite)
Meteoritical Bulletin:	MB 87	(2003)	SNC
MetBase:	v. 7.1	(2006)	Shergottite-basaltic (ol phyric)
Recommended:			Martian (shergottite) [explanation]

This is 1 of 329 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all]
Search for other: Martian meteorites

Writeup

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

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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 45041 approved meteorites from Antarctica (plus 3472 unapproved names)

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