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Allan Hills A81157
Basic information Name: Allan Hills A81157
     This is an OFFICIAL meteorite name.
Abbreviation: ALHA81157
This meteorite may also be called Allan Hills 81157 (ALH 81157) in publications.

Observed fall: No
Year found: 1981
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 11.8 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 7(1)  (1984)  H4
Meteoritical Bulletin:  MB 76  (1994)  H4
NHM Catalogue:  5th Edition  (2000)  H4
MetBase:  v. 7.1  (2006)  H4
Recommended:  H4    [explanation]

This is 1 of 5782 approved meteorites (plus 2 unapproved names) classified as H4.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Data from:
  MB76
  Table 2
  Line 680:
Origin or pseudonym:Main icefield
Mass (g):11.8
Class:H4
Weathering grade:B/C
Fayalite (mol%):19
Ferrosilite (mol%):17
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 7(1) (1984), 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° 41' 29"S, 159° 23' 9"E)
Note: the NHM and MetBase coordinates are 7.7 km apart

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