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| Yamato 981651 | |||||||||
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| Basic information | Name: Yamato 981651 This is an OFFICIAL meteorite name. Abbreviation: Y-981651 Observed fall: No Year found: 1998 Country: Antarctica [Collected by National Institute of Polar Research, Japan] Mass:  236 g | ||||||||
| Classification history: |
This is 1 of 576 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||
| Writeup |
Writeup from MN J10(2):
Sample Name: Yamato 981651 Location: Minami-Yamato Nunataks Dimensions (cm): 8.4 x 5.4 x 3.9 Weight (g): 235.88 Weathering: A Fracturing: A Meteorite Type: Glassy basalt
Macroscopic description This is a subrounded complete stone. Some amount of small patchy fusion crust is remaining. Many rounded vesicles (up to 3 mm) are observed on the half of the surface. Remaining surface is smooth and compact. Exposed interior is fine-grained and dark gray in color.
Petrographic Description (Yamaguchi A.) The section shows an elongated, hollow skeletal grains of pyroxene (~0.05 x 2 mm) in a glassy matrix. This meteorite contains many irregular to rounded vesicles (<0.6 mm). Pyroxene (Fs26-33Wo50-62) is rich in Al2O3 (7-8 wt%). The FeO/MnO ratios of pyroxenes (25-30) and oxygen isotopic composition (δ18O = +3.55, δ17O = +1.44, , Δ17O = -0.44) analyzed by Clayton and Mayeda indicate that this meteorite is an impact melt rock of eucrite. | ||||||||
| Plots: | O isotopes: | ||||||||
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| References: | Published in Meteorite newsletter : Japanese collection of Antarctic meteorites /Meteorite newsletter : Japanese collection of Antarctic meteorites ,10(2),1-9 (2001-12) Never published in the Meteoritical Bulletin
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Geography:
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Statistics: This is 1 of 43856 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||
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