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Allan Hills A80118
Basic information Name: Allan Hills A80118
     This is an OFFICIAL meteorite name.
Abbreviation: ALHA80118
This meteorite may also be called Allan Hills 80118 (ALH 80118) in publications.

Observed fall: No
Year found: 1980
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 2.4 g
Classification
  history:
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 5857 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)
Writeuphelp
Writeup from AMN 5(1):

Sample No.: ALHA80118

Location: Allan Hills

Field No.: 1010

Weight (gms): 2.4

Meteorite Type: H6 Chondrite

 

Physical Description: Carol Schwarz

This small specimen is completely covered with fusion crust. The bottom is shiny black with reddish areas and pitted. The remaining surfaces are a dull black. Chipping revealed a thick fusion crust with a small area of light gray matrix. Dimensions: 2 x 1.3 x 6 cm

 

Petrographic Description: Brian Mason

Chondritic structure is practically absent, the specimen consisting largely of granular olivine and pyroxene, with minor amounts of nickel-iron, plagioclase, and troilite. Well-preserved fusion crust, up to 3 mm thick, rims part of the section. The specimen shows few signs of weathering. Microprobe analyses gave the following compositions: olivine, Fa17; orthopyroxene, Fs15; plagioclase, An13. The meteorite is classified as an H6 chondrite.

Data from:
  MB76
  Table 2
  Line 508:
Origin or pseudonym:Main icefield
Mass (g):2.4
Class:H6
Weathering grade:B
Fayalite (mol%):17
Ferrosilite (mol%):15
Catalogs:
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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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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (76° 43'S, 159° 40'E)
     Recommended::   (76° 45' 35"S, 159° 18' 37"E)
Note: the NHM and MetBase coordinates are 10.3 km apart

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