Meteoritical Bulletin: Entry for Allan Hills A81038

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Allan Hills A81038

Basic information

Name: Allan Hills A81038
This is an OFFICIAL meteorite name.
Abbreviation: ALHA81038
This meteorite may also be called Allan Hills 81038 (ALH 81038) in publications.
Observed fall: No
Year found: 1981
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 229 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 6(1)	(1983)	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 6825 approved meteorites (plus 6 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

Writeup from AMN 6(1):

Sample No.: ALHA81038

Location: Allan Hills

Field No.: 1578

Weight (gms): 229.0

Meteorite Type: H6 Chondrite

Physical Description: Roberta Score

Several millimeter-sized patches of fusion crust remain on the exterior of this weathered meteorite. There are several fractures which penetrate the interior. Chipping exposed only weathered material. Dimensions: 7 x 4 x 4 cm.

Petrographic Description: Brian Mason

This section appears to be identical in texture, mineral compositions, and degree of weathering with that of ALHA81035, and is therefore paired with that meteorite. It is an H6 chondrite.

Data from:
  MB76
  Table 2
  Line 561:

Origin or pseudonym:	Main icefield
Mass (g):	229
Class:	H6
Weathering grade:	C
Fayalite (mol%):	19
Ferrosilite (mol%):	17
Comments:	26Al=35±2; 81035 pairing group

Catalogs:

Search for specimens in the Smithsonian Institution collection (U.S.):	Require SI photo
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References:

Published in Antarctic Meteorite Newsletter 6(1) (1983), 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' 23"S, 159° 15' 57"E)

Note: the NHM and MetBase coordinates are 10.7 km apart

Statistics:
This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names)

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history:

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