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| Allan Hills A79036 | |||||||||||||||||||||
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| Basic information | Name: Allan Hills A79036 This is an OFFICIAL meteorite name. Abbreviation: ALHA79036 This meteorite may also be called Allan Hills 79036 (ALH 79036) in publications. Observed fall: No Year found: 1979 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  20.2 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 11567 approved meteorites (plus 23 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.: ALHA79036 Location: Allan Hills Field No.: 1155 Weight (gms): 20.2 Meteorite Type: H5 Chondrite
Physical Description: Roberta Score Five surfaces are covered with a brown and black fusion crust. One fracture surface is mainly weathered but the clastic nature of this stone is still obvious. Chipping revealed a light gray colored interior with many clasts that has a 1-2 mm thick weathering rind. Dimensions: 3.5 x 2 x 1 cm.
Petrographic Description: Brian Mason Chondrules are prominent, ranging up to 1.5 mm across, but their margins tend to be diffuse and merge with the granular groundmass, which consists largely of olivine and pyroxene with minor amounts of nickel-iron and troilite. Fusion crust, up to 1 mm thick, rims one edge of the section. The meteorite is moderately weathered, with red-brown limonite filling voids in the fusion crust and limonitic staining around nickel-iron grains. Microprobe analyses give the following compositions: olivine, Fa18; pyroxene, Fs16. The meteorite is classified as an H5 chondrite. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 473: |
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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 44543 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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| Revision history: |
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