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Allan Hills A79010
Basic information Name: Allan Hills A79010
     This is an OFFICIAL meteorite name.
Abbreviation: ALHA79010
This meteorite may also be called Allan Hills 79010 (ALH 79010) in publications.

Observed fall: No
Year found: 1979
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 25.1 g
Antarctic Meteorite Newsletter:  AMN 4(1)  (1981)  H5
Meteoritical Bulletin:  MB 76  (1994)  H5
NHM Catalogue:  5th Edition  (2000)  H5
MetBase:  v. 7.1  (2006)  H5
Recommended:  H5    [explanation]

This is 1 of 10803 approved meteorites (plus 19 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Writeup from AMN 4(1):

Sample No.: ALHA79010

Field No.: 1182

Weight (gms): 25.1

Meteorite Type: H5 Chondrite


Physical Description: Roberta Score

Patches of dull black fusion crust cover only two surfaces. The other surfaces are fracture surfaces that are a reddish-brown color. The interior is mostly weathered though some small inclusions are visible. Dimensions: 3.5 x 2 x 2.5 cm.


Petrographic Description: Brian Mason

Chondritic structure is well developed, with chondrules ranging from 0.3-0.9 mm in diameter. The chondrules are set in fine-grained granular groundmass consisting largely of olivine and pyroxene, with minor nickel-iron and troilite. The section is pervaded by brown limonitic staining. Microprobe analyses show olivine (Fa17) and pyroxene (Fs15) of uniform composition. The meteorite is classified as an H5 chondrite.

Data from:
  Table 2
  Line 448:
Origin or pseudonym:Main icefield
Mass (g):25.1
Weathering grade:B/C
Fayalite (mol%):17
Ferrosilite (mol%):15
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References: Published in Antarctic Meteorite Newsletter 4(1) (1981), 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' 35"S, 159° 19' 36"E)
Note: the NHM and MetBase coordinates are 9.1 km apart

     This is 1 of 43331 approved meteorites from Antarctica (plus 3802 unapproved names)
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