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| Allan Hills A79008 | |||||||||||||||||||||
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| Basic information | Name: Allan Hills A79008 This is an OFFICIAL meteorite name. Abbreviation: ALHA79008 This meteorite may also be called Allan Hills 79008 (ALH 79008) in publications. Observed fall: No Year found: 1979 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  12 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 10209 approved meteorites (plus 18 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 |
Writeup from AMN 4(1):
Sample No.: ALHA79008 Location: Allan Hills Field No.: 1164 Weight (gms): 12.0 Meteorite Type: H5 Chondrite
Physical Description: Roberta Score This angular shaped stone has four of six surfaces that are covered with dull black fusion crust. The areas devoid of fusion crust range in color from yellow to reddish-brown. The interior is light gray in color and contain medium gray colored clasts. Oxidation is apparent along cracks, also apparent is a small weathering rind that is not continuous around the interior. Dimensions: 3 x 1.5 x 1.5 cm.
Petrographic Description: Brian Mason Chondritic structure is well developed, with chondrules ranging up to 1 mm in diameter; on one edge of the section is a granular olivine pyroxene enclave, 3 mm across, possibly part of a larger chondrule. The matrix consists largely of fine- to medium-grained olivine and pyroxene, with minor amounts of nickel-iron and troilite. Brown limonitic staining is pervasive throughout the section. Microprobe analyses show olivine (Fa17) and pyroxene (Fs15) of uniform composition, both in the enclave and the main part of the section. The meteorite is classified as an H5 chondrite. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 446: |
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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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Geography:
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Statistics: This is 1 of 40719 approved meteorites from Antarctica (plus 4494 unapproved names) | ||||||||||||||||||||
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