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Allan Hills A80127
Basic information Name: Allan Hills A80127
     This is an OFFICIAL meteorite name.
Abbreviation: ALHA80127
This meteorite may also be called Allan Hills 80127 (ALH 80127) in publications.

Observed fall: No
Year found: 1980
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 47.5 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.: ALHA80127

Location: Allan Hills

Field No.: 1024

Weight (gms): 47.4

Meteorite Type: H5 Chondrite

 

Physical Description: Roberta Score

Brownish-black fusion crust covers all but one surface of this meteorite. The fracture surface is weathered and rough in texture. Chondrules and clasts can easily be plucked out. The interior is light gray in color with some oxidation. Small dark inclusions are present. Dimensions: 4 x 3.5 x 2 cm

 

Petrographic Description: Brian Mason

Chondrules are moderately abundant, and range up to 1.8 mm in diameter. They are set in a granular matrix of olivine and pyroxene, with minor amounts of nickel-iron and troilite, and a little fine-grained plagioclase. Fusion crust is present along one edge. Brown limonitic staining surrounds the metal grains. Microprobe analyses gave the following compositions: olivine, Fa18; pyroxene, Fs16. The meteorite is classified as an H5 chondrite.

Data from:
  MB76
  Table 2
  Line 517:
Origin or pseudonym:Main icefield
Mass (g):47.5
Class:H5
Weathering grade:B
Fayalite (mol%):18
Ferrosilite (mol%):16
Comments:26Al=64±6; 80111 pairing group
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° 15' 22"E)
Note: the NHM and MetBase coordinates are 11 km apart

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