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| Allan Hills A79007 | |||||||||||||||||||||
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| Basic information | Name: Allan Hills A79007 This is an OFFICIAL meteorite name. Abbreviation: ALHA79007 This meteorite may also be called Allan Hills 79007 (ALH 79007) in publications. Observed fall: No Year found: 1979 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  142.3 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 12583 approved meteorites (plus 8 unapproved names) classified as L6. [show all] Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||
| Writeup |
Writeup from AMN 4(1):
Sample No.: ALHA79007 Location: Allan Hills Field No.: 1176 Weight (gms): 142.3 Meteorite Type: L6 Chondrite
Physical Description: Roberta Score Dull black fusion crust covers 50% of this stone. Areas devoid of fusion crust range in color from light gray to yellowish-brown. Many clasts are visible, one in particular is 1.0 x 0.6 cm in diameter, greenish-yellow in color and very fined grained. The interior is relatively fresh. A small weathering rind is visible in some areas and small bits of oxidation are scattered throughout the light gray colored matrix. Dimensions: 6 x 4 x 4 cm.
Petrographic Description: Brian Mason Chondrules are sparse and poorly developed; maximum diameter is 2.4 mm. Major minerals are olivine (Fa23) and orthopyroxene (Fs19); minor constituents are plagioclase (An10), nickel-iron, and troilite. A slight amount of weathering is indicated by limonitic staining around some of the nickel-iron grains. The meteorite is classified as an L6 chondrite. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 445: |
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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 44248 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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