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Yamato 000047
Basic information Name: Yamato 000047
     This is an OFFICIAL meteorite name.
Abbreviation: Y-000047
Observed fall: No
Year found: 2000
Country: Antarctica [Collected by National Institute of Polar Research, Japan]
Mass:help 5.3 g
Classification
  history:
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 245 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 28 Mar 2006
Writeuphelp
Writeup from MN J14(1):

Sample Name: Yamato 000047

Location: Yamato Mountains

Dimensions (cm): 2.2x1.7x1.5

Weight (g): 5.34

Weathering: A

Fracturing: A

Meteorite Type: Lherzolitic shergottite

 

Macroscopic description

 

This is a subrounded, 1/2 to 1/3 of complete stone. 40% of surface is covered by shiny black fusion crust. Exposed interior shows fine-grained granular texture.

 

Petrographic Description

 

The section shows a typical poikilitic texture. Large oikocrysts of pyroxene enclose olivines and oxide minerals. Minor maskelynites are observed. Low-Ca pyroxene has a mean composition of Fs22.5Wo3.4. Olivine has a mean composition of Fa30.1. The oxygen isotopic composition (analyzed by I. Franchi) of a bulk rock sample that is δ18O=4.178, δ17Ο=2.481, Δ17O=0.308, indicates that the meteorite is martian origin.

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References: Published in Meteorite newsletter : Japanese collection of Antarctic meteorites /Meteorite newsletter : Japanese collection of Antarctic meteorites ,14, (2006-03)
Never published in the Meteoritical Bulletin
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Geography:

Antarctica
Coordinates:Unknown.

Statistics:
     This is 1 of 40744 approved meteorites from Antarctica (plus 4494 unapproved names)

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