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Allan Hills A80122
Basic information Name: Allan Hills A80122
     This is an OFFICIAL meteorite name.
Abbreviation: ALHA80122
This meteorite may also be called Allan Hills 80122 (ALH 80122) in publications.

Observed fall: No
Year found: 1980
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 49.8 g
Antarctic Meteorite Newsletter:  AMN 5(1)  (1982)  H6
Meteoritical Bulletin:  MB 76  (1994)  H6
NHM Catalogue:  5th Edition  (2000)  H6
MetBase:  v. 7.1  (2006)  H6
Recommended:  H6    [explanation]

This is 1 of 6416 approved meteorites (plus 5 unapproved names) classified as H6.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Writeup from AMN 5(1):

Sample No.: ALHA80122

Location: Allan Hills

Field No.: 1017

Weight (gms): 49.3

Meteorite Type: H6 Chondrite


Physical Description: Carol Schwarz

Fusion crust is present on all but one face of this angular specimen. Shallow regmaglypts occur on the fusion crust covered surfaces. The fusion crust is dull black and approximately 1 mm thick. The interior is gray with some small chondrules or clasts visible. A brown weathering rind from 1 mm to 1 cm wide is present. Dimensions: 4 x 3 x 2 cm


Petrographic Description: Brian Mason

Chondrules are present, but. they are poorly defined and tend to merge with the granular groundmass, which consists mainly of olivine and pyroxene, with minor amounts of nickel-iron, plagioclase, and troilite. Brown limonitic staining is present in association with the nickel-iron. Microprobe analyses gave the following compositions: olivine, Fa18; pyroxene, Fs16; plagioclase, An12. The meteorite is classified as an H6 chondrite.

Data from:
  Table 2
  Line 512:
Origin or pseudonym:Main icefield
Mass (g):49.8
Weathering grade:B/C
Fayalite (mol%):18
Ferrosilite (mol%):16
Comments:80122 pairing group
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References: Published in Antarctic Meteorite Newsletter 5(1) (1982), 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° 41' 46"S, 159° 20' 36"E)
Note: the NHM and MetBase coordinates are 8.6 km apart

     This is 1 of 43499 approved meteorites from Antarctica (plus 3802 unapproved names)
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