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| Allan Hills 83106 | |||||||||||||||||||||||||
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| Basic information | Name: Allan Hills 83106 This is an OFFICIAL meteorite name. Abbreviation: ALH 83106 Observed fall: No Year found: 1983 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  22.3 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 554 approved meteorites classified as CM2. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites | ||||||||||||||||||||||||
| Writeup |
Writeup from AMN 9(1):
Sample No.: ALH83106 Location: Allan Hills Weight (g): 22.3 Field No.: 2799 Dimensions (cm): 4.5 x 2.5 x 1.5 Meteorite Type: C2 Chondrite
Macroscopic Description: Carol Schwarz, This meteorite has a rectangular shape and is covered with a very black and sometimes polygonally fractured fusion crust on three sides. The other surfaces are olive green and very fine-grained. One or two cracks penetrate the specimen. The interior is black and very fine-grained.
Thin Section (,4) Description: Brian Mason Chondrules are small and sparse, the section consisting largely of small mineral grains (0.01-0.1 mm across) in a translucent brown to black matrix. Most of the mineral grains are serpentinized. Olivine in the chondrules is mostly close to forsterite in composition, but compositions up to Fa5 were measured. Troilite and nickel-iron are extremely rare. The meteorite is a C2 chondrite, possibly paired with ALH83100. | ||||||||||||||||||||||||
| Data from: MB76 Table 2 Line 964: |
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| References: | Published in Antarctic Meteorite Newsletter 9(1) (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 40849 approved meteorites from Antarctica (plus 4494 unapproved names) | ||||||||||||||||||||||||
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