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Allan Hills A80123
Basic information Name: Allan Hills A80123
     This is an OFFICIAL meteorite name.
Abbreviation: ALHA80123
This meteorite may also be called Allan Hills 80123 (ALH 80123) in publications.

Observed fall: No
Year found: 1980
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 27.8 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 5(1)  (1982)  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 9655 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 5(1):

Sample No.: ALHA80123

Location: Allan Hills

Field No.: 1013

Weight (gms): 27.8

Meteorite Type: H5 Chondrite

 

Physical Description: Carol Schwarz

This is not a complete specimen. Two surfaces are covered with thin black fusion crust and the remainder is dark reddish-brown and iridescent. Chipping revealed that the interior is totally weathered. Dimensions: 4 x 3 x 1.5 cm

 

Petrographic Description: Brian Mason

Chondritic structure is moderately well developed, but the chondrules are generally small, ranging up to 0.6 mm in diameter.. Traces of fusion crust are present along one edge. Weathering is extensive, with limonitic staining and limonite veinlets throughout the section. Microprobe analyses gave the following compositions: olivine, Fa18; pyroxene, Fs16. The meteorite is classified as an H5 chondrite.

Data from:
  MB76
  Table 2
  Line 513:
Origin or pseudonym:Main icefield
Mass (g):27.8
Class:H5
Weathering grade:C
Fayalite (mol%):18
Ferrosilite (mol%):16
Comments:26Al=32±4
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 5(1) (1982), 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° 41' 22"S, 159° 22' 8"E)
Note: the NHM and MetBase coordinates are 8.2 km apart

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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