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Lunar Meteorite: Graves Nunataks (GRA) 06157

Antarctica 


Photo courtesy of NASA.


  
Small samples of GRA 06157. Millimeter ticks for scale.
(Photo by Randy Korotev)

Classification from Antarctic Meteorite Newsletter, Vol. 30, No. 2, 2007

GRA 06157

Sample No.: GRA 06157
Location: Graves Nunataks
Field No.: 17724
Dimensions (cm): 1.0 x 1.0 x 0.5
Weight (g): 0.788

Meteorite Type: Lunar-Anorth. Breccia

Macroscopic Description: Kathleen McBride

The exterior has no fusion crust and is a gray color with white and cream colored clasts. The interior is a gray matrix with white clasts throughout.

Thin Section (,2) Description: Tim McCoy, Lauren LaCroix and Linda Welzenbach

The section shows a groundmass of comminuted pyroxene, olivine and plagioclase with grain sizes up to 1 mm. One-half of the section exhibits a darkened matrix. Olivine is Fa7-54, pyroxene ranges from Fs19-66Wo2-45 (Fe/Mn ~ 60), and plagioclase An94-97. The meteorite is lunar, probably an anorthositic regolith breccia.

More Information

Meteoritical Bulletin Database

GRA 06157

Map

ANSMET location Map

References

Korotev R. L., Irving A. J., and Bunch T. E. (2008) Keeping up with the lunar meteorites – 2008 (abstract). In Lunar and Planetary Science XXXIX, abstract no. 1209, 39th Lunar and Planetary Science Conference, Houston.

Chemical Classification

Overview | GRA 06157
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Prepared by:

Randy L. Korotev

Department of Earth and Planetary Sciences
Washington University in St. Louis

Please don't contact me about the meteorite you think you’ve found until you read this and this.

e-mail: korotev@wustl.edu

Last revised: 08-Feb-2008