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| Elephant Moraine 90083 | |||||||||||||||||||||
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| Basic information | Name: Elephant Moraine 90083 This is an OFFICIAL meteorite name. Abbreviation: EET 90083 Observed fall: No Year found: 1990 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  3.6 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 95 approved meteorites classified as L3.5. [show all] Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||
| Writeup |
Writeup from AMN 15(2):
Sample No.: EET90083 Location: Elephant Moraine Field Number: 6568 Dimensions (cm): 1.6 x 1.5 x 1.0 Weight (g): 3.6 Meteorite Type: L3 chondrite
Macroscopic Description: Cecilia Satterwhite Most of the fusion crust present is shiny, pitted, and black. A small percentage of the fusion crust is frothy. The interior of EET90083 is gray. A profusion of chondrules/inclusions are present; some have well-defined edges. A minor amount of metal was noted.
Thin Section (,2) Description: Brian Mason The section shows a close-packed aggregate of chondrules and chondrule fragments, up to 2.4 mm across, in a granular matrix of olivine and pyroxene with a little nickel-iron and troilite. Remnants of fusion crust rim the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa 2-30 , mean Fa20 (CV FeO is 43); pyroxene, Fs3-21. The variability of olivine and pyroxene compositions indicates type 3, and the small amount of nickel-iron L group, hence the meteorite is classified as an L3 chondrite (estimated L3.5).
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| Data from: MB76 Table 2 Line 2115: |
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| References: | Published in Antarctic Meteorite Newsletter 15(2) (1992), 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 40744 approved meteorites from Antarctica (plus 4494 unapproved names) | ||||||||||||||||||||
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