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Grosvenor Mountains 95517
Basic information Name: Grosvenor Mountains 95517
     This is an OFFICIAL meteorite name.
Abbreviation: GRO 95517
Observed fall: No
Year found: 1995
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 574 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 20(1)  (1997)  EH3
Meteoritical Bulletin:  MB 82  (1998)  EH3
NHM Catalogue:  5th Edition  (2000)  EH3
MetBase:  v. 7.1  (2006)  EH3
Recommended:  EH3    [explanation]

This is 1 of 138 approved meteorites classified as EH3.   [show all]
Search for other: EH chondrites, Enstatite chondrites, Enstatite chondrites (type 3), and Enstatite-rich meteorites
Writeuphelp
Writeup from AMN 20(1):
Sample No.:GRO95517
Location:Grosvenor Mountains
Dimensions (cm):7.5 x 7.5 x 6.0
Weight (g):574
Meteorite Type:EH3 Chondrite
GRO95517

Macroscopic Description: Kathleen McBride
The exterior of this meteorite is covered with dull brown/black fusion crust. The surface is rough and flaky. Polygonal fractures are present and oxidation is visible in areas. The interior is dark gray fine grained crystalline matrix with yellow chondrules and metal. It is rusty and very weathered.

Thin Section (,2) Description: Brian Mason
The section shows an aggregate of small chondrules (up to 0.6 mm), chondrule fragments, and pyroxene grains in a matrix of about 30% of nickel-iron and sulfides. Weathering is extensive, with brown limonitic staining throughout the section. Microprobe analyses show that the pyroxene is enstatite of somewhat variable composition (Fs1-5); the nickel-iron contains 2.2-2.4% Si. The meteorite is an enstatite chondrite, tentatively classified as EH3.

Data from:
  MB82
  Table A1
  Line 151:
Origin or pseudonym:South Raymond
Mass (g):574
Class:EH3
Weathering grade:C
Ferrosilite (mol%):1-5
Comments:NTL=8±2
Catalogs:
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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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Photos:
CreditPhotos
Photographs from AMN:
Photograph from unknown source A photo is in the write-up above
Photos from the Encyclopedia of Meteorites:
courtesy Dr Carlton Allen, JSC-KT, NASA   
Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (85° 40'S, 175° 0'E)
     Recommended::   (85° 40'S, 175° 0'E)

Statistics:
     This is 1 of 40719 approved meteorites from Antarctica (plus 4494 unapproved names)
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