MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 6 Aug 2022
Search for: Search type: Search limits: Display: Publication:
Text help
Starts with
Sounds like
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Allan Hills A79036
Basic information Name: Allan Hills A79036
     This is an OFFICIAL meteorite name.
Abbreviation: ALHA79036
This meteorite may also be called Allan Hills 79036 (ALH 79036) in publications.

Observed fall: No
Year found: 1979
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 20.2 g
Antarctic Meteorite Newsletter:  AMN 4(1)  (1981)  H5
Meteoritical Bulletin:  MB 76  (1994)  H5
NHM Catalogue:  5th Edition  (2000)  H5
MetBase:  v. 7.1  (2006)  H5
Recommended:  H5    [explanation]

This is 1 of 10884 approved meteorites (plus 19 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Writeup from AMN 4(1):

Sample No.: ALHA79036

Location: Allan Hills

Field No.: 1155

Weight (gms): 20.2

Meteorite Type: H5 Chondrite


Physical Description: Roberta Score

Five surfaces are covered with a brown and black fusion crust. One fracture surface is mainly weathered but the clastic nature of this stone is still obvious. Chipping revealed a light gray colored interior with many clasts that has a 1-2 mm thick weathering rind. Dimensions: 3.5 x 2 x 1 cm.


Petrographic Description: Brian Mason

Chondrules are prominent, ranging up to 1.5 mm across, but their margins tend to be diffuse and merge with the granular groundmass, which consists largely of olivine and pyroxene with minor amounts of nickel-iron and troilite. Fusion crust, up to 1 mm thick, rims one edge of the section. The meteorite is moderately weathered, with red-brown limonite filling voids in the fusion crust and limonitic staining around nickel-iron grains. Microprobe analyses give the following compositions: olivine, Fa18; pyroxene, Fs16. The meteorite is classified as an H5 chondrite.

Data from:
  Table 2
  Line 473:
Origin or pseudonym:Main icefield
Mass (g):20.2
Weathering grade:B
Fayalite (mol%):18
Ferrosilite (mol%):16
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 4(1) (1981), 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' 14"S, 159° 10' 48"E)
Note: the NHM and MetBase coordinates are 12.6 km apart

     This is 1 of 43352 approved meteorites from Antarctica (plus 3802 unapproved names)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page