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Allan Hills 84052
Basic information Name: Allan Hills 84052
     This is an OFFICIAL meteorite name.
Abbreviation: ALH 84052
Observed fall: No
Year found: 1984
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 10.5 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 9(2)  (1986)  LL6
Meteoritical Bulletin:  MB 76  (1994)  LL6
NHM Catalogue:  5th Edition  (2000)  LL6
MetBase:  v. 7.1  (2006)  LL6
Recommended:  LL6    [explanation]

This is 1 of 2749 approved meteorites (plus 1 unapproved name) classified as LL6.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Writeuphelp
Writeup from AMN 9(2):

Sample No.: ALH84052

Location: Allan Hills

Weight (g): 10.5

Field No.: 1452

Dimensions (cm): 2.5 x 1.8 x 1.8

Meteorite Type: LL6 Chondrite

 

Macroscopic Description: Carol Schwarz

Black to slightly reddish-brown fusion crust covers 50% of this pebble. The remainder of its surface is black. No features are visible in the black interior except for some metal(?) flecks and reddish-brown staining.

 

Thin Section (,3) Description: Brian Mason

Chondritic structure is barely perceptible, being represented by a few chondrule fragments in a granular matrix consisting largely of olivine and pyroxene; small amounts of nickel-iron and troilite are present as widely dispersed tiny grains, possibly a shock effect. The texture suggests an aggregate of microclasts. Microprobe analyses give the following compositions: olivine, Fa29; pyroxene, Fs24; plagioclase, An11. The meteorite is classified as an LL6 chondrite.

Data from:
  MB76
  Table 2
  Line 1017:
Origin or pseudonym:Far Western
Mass (g):10.5
Class:LL6
Weathering grade:A/B
Fayalite (mol%):29
Ferrosilite (mol%):24
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 9(2) (1986), 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° 57' 2"S, 156° 56' 6"E)
Note: the NHM and MetBase coordinates are 74.2 km apart

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