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| Allan Hills 85002 | |||||||||||||||||||||||||
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| Basic information | Name: Allan Hills 85002 This is an OFFICIAL meteorite name. Abbreviation: ALH 85002 Observed fall: No Year found: 1985 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  438 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 121 approved meteorites classified as CK4. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites | ||||||||||||||||||||||||
| Writeup |
Writeup from AMN 9(3):
Sample No.: ALH85002 Location: Allan Hills Weight (g): 437.7 Field No.: 2219 Dimensions (cm): 8 x 7 x 5 Meteorite Type: C4 Chondrite
Macroscopic Description: René Martinez Approximately 80% of the exterior is covered with reddish-brown, polygonally fractured fusion crust. The interior is light gray with dark rounded inclusions as large as 1 mm and white irregular-shaped inclusions as large as 3 mm in longest dimension.
Thin Section (,4) Description: Brian Mason The section consists largely of finely granular olivine (grains ranging up to 0.1 mm), with a little pyroxene, plagioclase, and opaques (largely magnetite). A few chondrules, made up of coarser-grained olivine, are present. The section is rimmed with fusion crust along one edge. Micro-probe analyses give the following compositions: olivine, Fa29; pyroxene, Fs26; plagioclase, An54-59. The meteorite is a C4 chondrite and closely resembles ALH82135; the possibility of pairing should be considered. | ||||||||||||||||||||||||
| Data from: MB76 Table 2 Line 1231: |
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| References: | Published in Antarctic Meteorite Newsletter 9(3) (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 43856 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||
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