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| Allan Hills 85119 | |||||||||||||||||||||||||
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| 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:  20.6 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 26 approved meteorites classified as EL3. [show all] Search for other: EL chondrites, Enstatite chondrites, Enstatite chondrites (type 3), and Enstatite-rich meteorites | ||||||||||||||||||||||||
| Writeup |
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: |
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| 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:
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Statistics: This is 1 of 43856 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||
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