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Yamato 981651
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:help 236 g
Classification
  history:
MetBase:  v. 7.1  (2006)  Eucrite
Recommended:  Eucrite    [explanation]

This is 1 of 442 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Writeuphelp
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.

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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:

Antarctica
Coordinates:
     Recommended::   (71° 30'S, 35° 40'E)

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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