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Yamato 000027
Basic information Name: Yamato 000027
     This is an OFFICIAL meteorite name.
Abbreviation: Y-000027
Observed fall: No
Year found: 2000
Country: Antarctica [Collected by National Institute of Polar Research, Japan]
Mass:help 9.7 g
Classification
  history:
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 292 approved meteorites (plus 2 unapproved names) 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 000027

Location: Yamato Mountains

Dimensions (cm): 2.0x2.0x1.6

Weight (g): 9.68

Weathering: A

Fracturing: A

Meteorite Type: Lherzolitic shergottite

 

Macroscopic description

 

This is a subrounded stone. A small patch of shiny black fusion crust remains on one plane surface. Exposed interior shows fine-grained granular texture. Thick (2 mm) black shock vein penetrates the stone.

 

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 Fs23.1Wo3.6. Olivine has a mean composition of Fa32.6. Mean composition of maskelynite is An56.9. The oxygen isotopic composition (analyzed by I. Franchi) of a bulk rock sample that is δ18O=4.129, δ17Ο=2.446, Δ17O=0.299, 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 43856 approved meteorites from Antarctica (plus 3802 unapproved names)

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