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| Yamato 000097 | |||||||
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| Basic information | Name: Yamato 000097 This is an OFFICIAL meteorite name. Abbreviation: Y-000097 Observed fall: No Year found: 2000 Country: Antarctica [Collected by National Institute of Polar Research, Japan] Mass:  24.5 g | ||||||
| Classification history: |
This is 1 of 307 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all] Search for other: Martian meteorites | ||||||
| Comments: | Approved 28 Mar 2006 | ||||||
| Writeup |
Writeup from MN J14(1):
Sample Name: Yamato 000097 Location: Yamato Mountains Dimensions (cm): 3.5x3.3x1.7 Weight (g): 24.48 Weathering: A Fracturing: A Meteorite Type: Lherzolitic shergottite
Macroscopic description
This is a platy-shaped nearly complete stone. 50% of stone 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 Fs22.0Wo3.1. Olivine has a mean composition of Fa33.0. Composition of maskelynite is An61.2. The oxygen isotopic composition (analyzed by I. Franchi) of a bulk rock sample that is δ18O=4.178, δ17Ο=2.471, Δ17O=0.298, 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:
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Statistics: This is 1 of 44248 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||