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Allan Hills A80120
Basic information Name: Allan Hills A80120
     This is an OFFICIAL meteorite name.
Abbreviation: ALHA80120
This meteorite may also be called Allan Hills 80120 (ALH 80120) in publications.

Observed fall: No
Year found: 1980
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 60.1 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 5(1)  (1982)  L6
Meteoritical Bulletin:  MB 76  (1994)  L6
NHM Catalogue:  5th Edition  (2000)  L6
MetBase:  v. 7.1  (2006)  L6
Recommended:  L6    [explanation]

This is 1 of 11000 approved meteorites (plus 6 unapproved names) classified as L6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Writeuphelp
Writeup from AMN 5(1):

Sample No.: ALHA80120

Location: Allan Hills

Field No.: 1025

Weight (gms): 60.0

Meteorite Type: L6 Chondrite

 

Physical Description: Carol Schwarz

There is no fusion crust on this specimen except for a small area on the B face. The remainder of the sample is rough and weathered similar to ALHA80101. Although there are few distinct fractures its roughness causes it to be quite friable. The interior is light gray with oxidation halos and a dark gray weathering rind. A 7 mm chondrule was separated during chipping. Dimensions: 6 x 3 x 2 cm

 

Petrographic Description: Brian Mason

Chondrules are sparse and poorly defined, tending to merge with the granular matrix, which consists largely of olivine and pyroxene, with minor amounts of plagioclase, troilite, and nickel-iron. A moderate amount of limonitic staining is present around nickel-iron grains. Microprobe analyses gave the following mineral compositions: olivine, Fa24; orthopyroxene, Fs20; plagioclase, An11. The meteorite is classified as an L6 chondrite.

Data from:
  MB76
  Table 2
  Line 510:
Origin or pseudonym:Main icefield
Mass (g):60.1
Class:L6
Weathering grade:B
Fayalite (mol%):24
Ferrosilite (mol%):20
Comments:80101 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° 46' 24"S, 159° 16' 55"E)
Note: the NHM and MetBase coordinates are 11.7 km apart

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