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Allan Hills A80132
Basic information Name: Allan Hills A80132
     This is an OFFICIAL meteorite name.
Abbreviation: ALHA80132
This meteorite may also be called Allan Hills 80132 (ALH 80132) in publications.

Observed fall: No
Year found: 1980
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 152.8 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 4(2)  (1981)  H5
Meteoritical Bulletin:  MB 76  (1994)  H5
NHM Catalogue:  5th Edition  (2000)  H5
MetBase:  v. 7.1  (2006)  H5
Recommended:  H5    [explanation]

This is 1 of 9995 approved meteorites (plus 16 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Writeuphelp
Writeup from AMN 4(2):

Sample No.: ALHA80132

Location: Allan Hills

Field No.: 1097

Weight (gms): 152.8

Meteorite Type: H5 Chondrite

 

Physical Description,: Roberta Score

Most of this flat stone is covered with dull brownish-black fusion crust. Flow bands are prominent on one surface. Several fractures penetrate into the interior. A large weathering rind was revealed when the specimen was chipped. The unweathered areas, which are light gray in color, contain inclusions. Dimensions: 8 x 4.5 x 3 cm.

 

Petrographic Description: Brian Mason

Chondritic structure is moderately well developed, but chondrule margins are blurred, tending to merge with the granular groundmass, which consists largely of olivine and pyroxene, with minor amounts of nickel-iron and troilite. Plagioclase was not certainly identified. Limonitic staining is extensive around metal grains, and veinlets of limonite are present near one edge of the section. Microprobe analyses gave the following mineral compositions: olivine, Fa18; orthopyroxene, Fs16. The meteorite is classified as an H5 chondrite.

Data from:
  MB76
  Table 2
  Line 522:
Origin or pseudonym:Main icefield
Mass (g):152.8
Class:H5
Weathering grade:B
Fayalite (mol%):18
Ferrosilite (mol%):16
Comments:26Al=58±3; 80111 pairing group
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 4(2) (1981), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (76° 43'S, 159° 40'E)
     Recommended::   (76° 45' 40"S, 159° 20' 39"E)
Note: the NHM and MetBase coordinates are 9.6 km apart

Statistics:
     This is 1 of 40129 approved meteorites from Antarctica (plus 4494 unapproved names)
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