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Allan Hills A77119
Basic information Name: Allan Hills A77119
     This is an OFFICIAL meteorite name.
Abbreviation: ALHA77119
This meteorite may also be called Allan Hills 77119 (ALH 77119) in publications.

Observed fall: No
Year found: 1977
Country: Antarctica [Collected jointly by ANSMET (US) and NIPR (Japan)]
Mass:help 6.4 g
Antarctic Meteorite Newsletter:  AMN 1(2)  (1978)  H5
Meteoritical Bulletin:  MB 76  (1994)  H5
NHM Catalogue:  5th Edition  (2000)  H5
NIPR Catalogue:  2000 Edition  (2000)  H5
MetBase:  v. 7.1  (2006)  H5
Recommended:  H5    [explanation]

This is 1 of 10910 approved meteorites (plus 20 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.: ALHA77119

Location: Allan Hills

Field No.: 77123120

Weight (gms): 6.36

Meteorite Type: H5 Chondrite


Physical Description:

Specimen is nearly tabular and almost completely covered with a thin, weathered fusion crust. The fusion crust has a slight patina. No fresh metal was observed on chipping. The fresh interior surface is gray. Maximum dimension of specimen is ~2.0 cm.


Petrographic Description: Brian Mason

Chondrules common, some sharply defined, others with indistinct borders merging with the groundmass. Yellow-brown limonitic staining pervades the section, and patches and veinlets of red-brown limonite are common. Fusion crust is present on one edge. Microprobe analyses show olivine (Fa18) and orthopyroxene (Fs7 [sic]) of uniform composition; some small grains of sodic plagioclase were detected.

Data from:
  Table 2
  Line 94:
Origin or pseudonym:Main icefield
Mass (g):6.4
Weathering grade:C
Fayalite (mol%):18
Ferrosilite (mol%):17
Comments:77118 pairing group
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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° 43'S, 159° 40'E)

     This is 1 of 43500 approved meteorites from Antarctica (plus 3802 unapproved names)
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