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| Lewis Cliff 85328 | |||||||||||||||||||||
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| Basic information | Name: Lewis Cliff 85328 This is an OFFICIAL meteorite name. Abbreviation: LEW 85328 Observed fall: No Year found: 1985 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  106.8 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 649 approved meteorites classified as Ureilite. [show all] Search for other: Achondrites, Ureilites | ||||||||||||||||||||
| Comments: | Field number: 2035 | ||||||||||||||||||||
| Writeup |
Writeup from AMN 10(1):
Sample No.: LEW85328 Location: Lewis Cliff Weight (g): 106.8 Field No.: 2035 Dimensions (cm): 5x4x2 Meteorite Type: Ureilite
Macroscopic Description: Cecilia Satterwhite LEW85328 is covered by black fusion crust which has well defined ablation marks and is frothy in some areas. An ablation flange is present. Two mm-sized brown crystals make up the interior of this achondrite.
Thin Section (,5) Description: Brian Mason The section shows an aggregate of anhedral to subhedral grains (0.3-2.4 mm across) of olivine and pyroxene, in the approximate proportions of 2:1. Individual grains are rimmed by carbonaceous material. Trace amounts of finely-divided nickel-iron and troilite are present, mainly along grain boundaries. Microprobe analyses show olivine of uniform composition (Fa20) with notably high CaO content (0.3%); the pyroxene is pigeonite with composition Wo9Fs17. The meteorite is a ureilite; it is notably unshocked compared to most ureilites. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 2901: |
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| References: | Published in Antarctic Meteorite Newsletter 10(1) (1987), 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 44248 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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