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Graves Nunataks 98171
Basic information Name: Graves Nunataks 98171
     This is an OFFICIAL meteorite name.
Abbreviation: GRA 98171
Observed fall: No
Year found: 1998
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 8 g
NHM Catalogue:  5th Edition  (2000)  L3.8
Antarctic Meteorite Newsletter:  AMN 23(1)  (2000)  L3.8
Meteoritical Bulletin:  MB 84  (2000)  L3.8
MetBase:  v. 7.1  (2006)  L3.8
Recommended:  L3.8    [explanation]

This is 1 of 69 approved meteorites classified as L3.8.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeup from AMN 23(1):

Sample No.:

GRA 98171
Location: Graves Nunataks
Dimensions (cm):   2.0x2.0x1.0
Weight (g): 8.000
Meteorite Type: L3 Chondrite (estimated 3.8)

Macroscopic Description: Kathleen McBride
Less then 5 % of the exterior of this ordinary chondrite has some rough black fusion crust.   The interior is rusty with evaporites visible.  It has a high metal content.

Thin Section (, 2) Description: Tim McCoy
GRA 98171 The section exhibits numerous large, well-defined chondrules (up to 2 mm) in a black matrix of fine-grained silicates, metal and troilite.  Weak shock effects are present. Polysynthetically twinned pyroxene is common.  The meteorite is highly weathered.  Silicates are unequilibrated; olivines range from Fa7-25, with most grains Fs22-24, and pyroxenes are Fs4-20.  The meteorite if an L3 chondrite (estimated subtype 3.8).

Data from:
  Table A1
  Line 170:
Origin or pseudonym:Lower Central
Mass (g):8
Weathering grade:CE
Fayalite (mol%):7-25
Ferrosilite (mol%):4-20
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References: Published in Antarctic Meteorite Newsletter 23(1) (2000), JSC, Houston
Published in Meteoritical Bulletin, no. 84, MAPS 35, A199-A225 (2000)
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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 43699 approved meteorites from Antarctica (plus 3802 unapproved names)
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