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Allan Hills 83038
Basic information Name: Allan Hills 83038
     This is an OFFICIAL meteorite name.
Abbreviation: ALH 83038
Observed fall: No
Year found: 1983
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 86.5 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 10(2)  (1987)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.8
NHM Catalogue:  5th Edition  (2000)  L3.8
MetBase:  v. 7.1  (2006)  L3.8
Recommended:  L3.8    [explanation]

This is 1 of 68 approved meteorites classified as L3.8.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeuphelp
Writeup from AMN 10(2):

Sample No.: ALH83038

Location: Allan Hills

Weight (g): 86.5

Field No.: 2517

Dimensions (cm): 5 x 4 x 3

Meteorite Type: L3 Chondrite

 

Macroscopic Description: René Martinez,

Brown, polygonally fractured fusion crust covers the top and iridescent fusion crust covers the bottom. Interior is heavily weathered, no features are visible in the brown matrix.

 

Thin Section (,3) Description: Brian Mason

Chondrules and chondrule fragments are abundant, ranging up to 2.4 mm across, and are set in a small amount of fine-grained turbid matrix. A few grains of nickel-iron and sulfide are present in the matrix. Brown limonitic staining pervades the section. Microprobe analyses show olivine ranging in composition from Fa7 to Fa35, with a mean of Fa21 (CV FeO is 34); pyroxene composition ranges from Fs2 to Fs22. The meteorite is an L3 chondrite (estimated L3.6); it may be another member of the ALHA77011 pairing group.

Data from:
  MB76
  Table 2
  Line 921:
Origin or pseudonym:Main icefield
Mass (g):86.5
Class:L3.8
Weathering grade:C
Fayalite (mol%):7-35
Ferrosilite (mol%):2-22
Comments:26Al=44±3; 77011 pairing group
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 10(2) (1987), 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° 43' 4"S, 159° 21' 51"E)
Note: the NHM and MetBase coordinates are 7.8 km apart

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