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| Allan Hills 84037 | |||||||||||||||||||||||||
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| Basic information | Name: Allan Hills 84037 This is an OFFICIAL meteorite name. Abbreviation: ALH 84037 Observed fall: No Year found: 1984 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  3 g | ||||||||||||||||||||||||
| Classification history: |
This is the only approved meteorite classified as CVred3.5. Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||
| Comments: | Revised 27 Mar 2024: Reclassified in AMN 46(1) | ||||||||||||||||||||||||
| Writeup |
Writeup from AMN 9(2):
Sample No.: ALH84037 Location: Allan Hills Weight (g): 3.0 Field No.: 2868 Dimensions (cm): 1.5 x 1.3 x 1 Meteorite Type: C3V Chondrite
Macroscopic Description: Carol Schwarz This fragment has rusty (and in places, shiny) fusion crust on one surface. Broken surfaces are black and rough with abundant weathering. Evaporite deposit is present on both interior and exterior surfaces. The interior is dark gray to reddish from oxidation. Millimeter-sized lighter colored clasts/chondrules were noted.
Thin Section (,2) Description: Brian Mason The small section (5 mm across) shows ameboid chondrules and irregular inclusions up to 2 mm in maximum dimension set in a small amount of translucent brown isotropic matrix. The chondrules and inclusions consist of granular olivine with minor amounts of polysynthetically twinned clinopyroxene. Microprobe analyses give the following compositions: olivine, Fa0.8-9, mean Fa4 (CV FeO 67); pyroxene, Fs0.5-12. The meteorite is a C3V chondrite and is so similar to ALH84028 that it can confidently be paired with it. | ||||||||||||||||||||||||
| Data from: MB76 Table 2 Line 1002: |
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| References: | Published in Antarctic Meteorite Newsletter 9(2) (1986), 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 44547 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||
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| Revision history: |
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