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Allan Hills 84037
Basic information Name: Allan Hills 84037
     This is an OFFICIAL meteorite name.
Abbreviation: ALH 84037
Observed fall: No
Year found: 1984
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 3 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 9(2)  (1986)  CV3
Meteoritical Bulletin:  MB 76  (1994)  CV3
NHM Catalogue:  5th Edition  (2000)  CV3
MetBase:  v. 7.1  (2006)  CV3
Recommended:  CV3    [explanation]

This is 1 of 507 approved meteorites (plus 1 unapproved name) classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Writeuphelp
Writeup from AMN 9(2):

Sample No.: ALH84037

Location: Allan Hills

Weight (g): 3.0

Field No.: 2868

Dimensions (cm): 1.5 x 1.3 x 1

Meteorite Type: C3V Chondrite

 

Macroscopic Description: Carol Schwarz

This fragment has rusty (and in places, shiny) fusion crust on one surface. Broken surfaces are black and rough with abundant weathering. Evaporite deposit is present on both interior and exterior surfaces. The interior is dark gray to reddish from oxidation. Millimeter-sized lighter colored clasts/chondrules were noted.

 

Thin Section (,2) Description: Brian Mason

The small section (5 mm across) shows ameboid chondrules and irregular inclusions up to 2 mm in maximum dimension set in a small amount of translucent brown isotropic matrix. The chondrules and inclusions consist of granular olivine with minor amounts of polysynthetically twinned clinopyroxene. Microprobe analyses give the following compositions: olivine, Fa0.8-9, mean Fa4 (CV FeO 67); pyroxene, Fs0.5-12. The meteorite is a C3V chondrite and is so similar to ALH84028 that it can confidently be paired with it.

Data from:
  MB76
  Table 2
  Line 1002:
Origin or pseudonym:Far Western
Mass (g):3
Class:CV3
Weathering grade:Be
Fayalite (mol%):0.8-9
Ferrosilite (mol%):0.5-12
Comments:84028 pairing group
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 9(2) (1986), 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° 58' 46"S, 156° 57' 40"E)
Note: the NHM and MetBase coordinates are 74.7 km apart

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