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Allan Hills A80103
Basic information Name: Allan Hills A80103
     This is an OFFICIAL meteorite name.
Abbreviation: ALHA80103
This meteorite may also be called Allan Hills 80103 (ALH 80103) in publications.

Observed fall: No
Year found: 1980
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 536 g
Antarctic Meteorite Newsletter:  AMN 4(2)  (1981)  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 12281 approved meteorites (plus 8 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)
Writeup from AMN 4(2):

Sample No.: ALHA80103

Location: Allan Hills

Field No.: 1068

Weight (gms): 535.9

Meteorite Type: L6 Chondrite


Physical Description: Carol Schwarz

The specimen has no fusion crust except for an area <1 cm2. ALHA80103 has a rough texture and has weathered reddish-brown. Unweathered areas are gray with some ~2 mm clasts distinguishable. A linear fracture runs parallel to the S surface which is smooth and reddish-brown. Sample has broken off in, places leaving a flat surface. This feature is also present on ALHA80101 and 80105. Chipping revealed an interior which is yellow-gray in color and friable. A discontinuous gray weathering rind is present. Some 3-5 mm clasts are barely visible. Oxidation halos are present as are metal flecks. Dimensions: 10.5 x 7 x 5 cm.


Petrographic Description: Brian Mason

Polished sections of ALHA80101, 80103, 80105 are identical in texture, mineral compositions, and degree of weathering, indicating that these three specimens are pieces of a single meteorite.

Data from:
  Table 2
  Line 494:
Origin or pseudonym:Main icefield
Mass (g):535.9
Weathering grade:B
Fayalite (mol%):24
Ferrosilite (mol%):20
Comments:26Al=57±3; 80101 pairing group
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References: Published in Antarctic Meteorite Newsletter 4(2) (1981), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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     Catalogue of Meteorites:   (76° 43'S, 159° 40'E)
     Recommended::   (76° 46' 26"S, 159° 16' 34"E)
Note: the NHM and MetBase coordinates are 11.9 km apart

     This is 1 of 43840 approved meteorites from Antarctica (plus 3802 unapproved names)
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