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Allan Hills 85119
Basic information Name: Allan Hills 85119
     This is an OFFICIAL meteorite name.
Abbreviation: ALH 85119
Observed fall: No
Year found: 1985
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 20.6 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 10(2)  (1987)  E4
AMN 17(1)  (1994)  EL3
Meteoritical Bulletin:  MB 76  (1994)  EL3
NHM Catalogue:  5th Edition  (2000)  EL3
MetBase:  v. 7.1  (2006)  EL3
Recommended:  EL3    [explanation]

This is 1 of 22 approved meteorites classified as EL3.   [show all]
Search for other: EL chondrites, Enstatite chondrites, Enstatite chondrites (type 3), and Enstatite-rich meteorites
Writeuphelp
Writeup from AMN 10(2):

Sample No.: ALH85119

Location: Allan Hills

Weight (g): 20.6

Field No.: 2671

Dimensions (cm): 3 x 2.5 x 1.5

Meteorite Type: E4 Chondrite

 

Macroscopic Description: Roberta Score

Frothy black fusion crust totally encases ALH85119. Evaporite deposit is present underneath the fusion crust in some areas. The interior is charcoal gray with dark chondrules. This stone is very coherent! Oxidation is extensive in some areas.

 

Thin Section (,3) Description: Brian Mason

The section shows a compact aggregate of chondrules, chondrule fragments, and irregular clasts up to 3 mm across, together with about 25% nickel-iron in grains up to 1.5 mm across. Troilite is present in minor amounts. The section shows a directional fabric, possibly a shock effect. The silicate material is almost entirely pyroxene; a little olivine is present, usually as small grains poikilitically enclosed in pyroxene. Coarsely crystallized graphite occurs within some metal grains. Microprobe analyses show a range of pyroxene composition, Fs0.3-12, with a mean of Fs2.4; CaO ranges from 0.2 to 3.7%. The nickel-iron contains 0.4-0.6% Si. The meteorite is tentatively classified as an E4 chondrite.

Data from:
  MB76
  Table 2
  Line 1347:
Origin or pseudonym:Far Western
Mass (g):20.6
Class:EL3
Weathering grade:Be
Ferrosilite (mol%):0.3-12
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 10(2) (1987), 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° 50' 0"S, 156° 10' 28"E)
Note: the NHM and MetBase coordinates are 90.1 km apart

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