MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 29 May 2023
Search for: Search type: Search limits: Display: Publication:
Text help
Starts with
Sounds like
Falls  Non-NWAs
What's new
  in the last:
Include past classifications in search
Limit to approved meteorite names
Search text:  
Allan Hills A81030
Basic information Name: Allan Hills A81030
     This is an OFFICIAL meteorite name.
Abbreviation: ALHA81030
This meteorite may also be called Allan Hills 81030 (ALH 81030) in publications.

Observed fall: No
Year found: 1981
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 1852 g
Antarctic Meteorite Newsletter:  AMN 6(1)  (1983)  LL3
AMN 7(1)  (1984)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.4
NHM Catalogue:  5th Edition  (2000)  L3.4
MetBase:  v. 7.1  (2006)  L3.4
Recommended:  L3.4    [explanation]

This is 1 of 51 approved meteorites classified as L3.4.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeup from AMN 6(1):

Sample No.: ALHA81030

Location: Allan Hills

Field No.: 1685

Weight (gms): 1851.6

Meteorite Type: LL3 Chondrite


Physical Description: Roberta Score

This angular stone is covered with patchy black fusion crust. Several large fractures penetrate the interior. A few inclusions are visible on the exterior. The bottom contains squall-like marks. Chipping exposed an interior of dark gray matrix material with small inclusions visible. Dimensions: 18 x 7.5 x 9 cm.


Petrographic Description: Brian Mason

This specimen closely resembles ALHA81025 in texture, range of mineral compositions, and degree of weathering. It is therefore classified as an LL3 chondrite and tentatively paired with that meteorite.

Data from:
  Table 2
  Line 553:
Origin or pseudonym:Main icefield
Mass (g):1851.6
Weathering grade:B/C
Fayalite (mol%):1-49
Ferrosilite (mol%):5-33
Comments:26Al=53±3; 77011 pairing group
Search for specimens in the Smithsonian Institution collection (U.S.):   
    Require SI photo
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 6(1) (1983), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
Find references in NASA ADS:
Find references in Google Scholar:

     Catalogue of Meteorites:   (76° 43'S, 159° 40'E)
     Recommended::   (76° 42' 5"S, 159° 23' 19"E)
Note: the NHM and MetBase coordinates are 7.3 km apart

     This is 1 of 43856 approved meteorites from Antarctica (plus 3802 unapproved names)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page