header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 20 Oct 2019
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Allan Hills 84031
Basic information Name: Allan Hills 84031
     This is an OFFICIAL meteorite name.
Abbreviation: ALH 84031
Observed fall: No
Year found: 1984
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 12.5 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 8(2)  (1985)  C2
AMN 17(1)  (1994)  CM2
Meteoritical Bulletin:  MB 76  (1994)  CM2
NHM Catalogue:  5th Edition  (2000)  CM2
MetBase:  v. 7.1  (2006)  CM2
Recommended:  CM2    [explanation]

This is 1 of 533 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Writeuphelp
Writeup from AMN 8(2):

Sample No.: ALH84031

Location: Allan Hills

Weight (g): 12.5

Field No.: 2029

Dimensions (cm): 2 x 2.5 x 1.5

Meteorite Type: C2 Chondrite

 

Macroscopic Description: Rene Martinez

Light brown polygonally fractured fusion crust covers this meteorite. The interior is dark and fine-grained. Some white salt deposit has formed on the exterior. This specimen is similar to ALH83100.

 

Thin Section (,2) Description: Glenn MacPherson

See ALH84029 for description.

Data from:
  MB76
  Table 2
  Line 996:
Origin or pseudonym:Far Western
Mass (g):12.5
Class:CM2
Weathering grade:Ae
Fayalite (mol%):0-2
Comments:83100 pairing group
Catalogs:
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 8(2) (1985), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (76° 43'S, 159° 40'E)
     Recommended::   (77° 2' 20"S, 157° 4' 25"E)
Note: the NHM and MetBase coordinates are 74.9 km apart

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page