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Grosvenor Mountains 95575
Basic information Name: Grosvenor Mountains 95575
     This is an OFFICIAL meteorite name.
Abbreviation: GRO 95575
Observed fall: No
Year found: 1995
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 137.8 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 21(1)  (1998)  Ureilite
Meteoritical Bulletin:  MB 82  (1998)  Ureilite
NHM Catalogue:  5th Edition  (2000)  Ureilite
MetBase:  v. 7.1  (2006)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 544 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Writeuphelp
Writeup from AMN 21(1):

Sample No.:

GRO95575

Location:

Grosvenor Mountains

Dimensions (cm):

5.5x5.5x 3.0

Weight (g):

137.77

Meteorite Type:

Ureilite

Macroscopic Description: Kathleen McBride
The exterior of this achondrite has smooth black fusion crust with polygonal fractures and oxidation haloes. The interior is a steel gray in color with numerous dark clasts approximately 1 mm in size. This meteorite is very soft and friable with some rust present.

Thin Section (,2) Description: Brian Mason
GRO95575 - Cross-Polarized LightThe section shows an aggregate of anhedral olivine and pyroxene grains, up to 2 mm across, in a black carbonaceous matrix which contains trace amounts of nickel-iron and troilite. The meteorite appears to be relatively unshocked. Olivine composition is somewhat variable, Fa16-21; pyroxene composition is Wo10Fs18. The meteorite is a ureilite.

Data from:
  MB82
  Table A1
  Line 209:
Origin or pseudonym:Inner Cecily
Mass (g):137.8
Class:Ur
Weathering grade:A/B
Fayalite (mol%):16-21
Ferrosilite (mol%):18
Catalogs:
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Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 21(1) (1998), 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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