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Graves Nunataks 95208
Basic information Name: Graves Nunataks 95208
     This is an OFFICIAL meteorite name.
Abbreviation: GRA 95208
Observed fall: No
Year found: 1995
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 778 g
Antarctic Meteorite Newsletter:  AMN 20(1)  (1997)  H3.7
Meteoritical Bulletin:  MB 82  (1998)  H3.7
NHM Catalogue:  5th Edition  (2000)  H3.7
MetBase:  v. 7.1  (2006)  H3.7
Recommended:  H3.7    [explanation]

This is 1 of 75 approved meteorites classified as H3.7.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeup from AMN 20(1):
Sample No.:GRA95208
Location: Graves Nunataks
Dimensions (cm):8.0 x 6.0 x 5.0
Weight (g):778.3
Meteorite Type:H3 Chondrite (estimated H3.7)

Macroscopic Description: Kathleen McBride
The exterior of this meteorite is covered by dull, thin, black fusion crust. Chondrules are visible through the fusion crust which covers 90% of this meteorite. The interior is a dark gray matrix with some light gray patches visible. This meteorite is loaded with chondrules, several mm in diameter, the largest seen is 7 mm. The meteorite has a high metal content and has rusty patches with metal veins. This ordinary chondrite was very heavy and difficult to break.

Thin Section (,2) Description: Brian Mason
The section shows a close-packed aggregate of chondrules (up to 1.8 mm across), chondrule fragments, and mineral grains in a dark matrix containing a moderate amount of nickel-iron and troilite. The meteorite is considerably weathered, with limonitic staining throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa19-27, mean Fa21; pyroxene, Fs7-23. The meteorite is classified as an H3 chondrite (estimated H3.7).

Data from:
  Table A1
  Line 109:
Origin or pseudonym:Lower West Graves
Mass (g):778.3
Weathering grade:B
Fayalite (mol%):19-27
Ferrosilite (mol%):7-23
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References: Published in Antarctic Meteorite Newsletter 20(1) (1997), JSC, Houston
Published in Meteoritical Bulletin, no. 82, MAPS 33, A221-A240 (1998)
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Photographs from AMN:
Photograph from unknown source A photo is in the write-up above
Photos from the Encyclopedia of Meteorites:
Dr Carlton Allen, JSC-KT, NASA   

     Catalogue of Meteorites:   (86° 43'S, 141° 30'W)
     Recommended::   (86° 43'S, 141° 30'W)

     This is 1 of 40849 approved meteorites from Antarctica (plus 4494 unapproved names)
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