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| Lewis Cliff 88772 | |||||||||||||||||||||
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| Basic information | Name: Lewis Cliff 88772 This is an OFFICIAL meteorite name. Abbreviation: LEW 88772 Observed fall: No Year found: 1988 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  7.4 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 649 approved meteorites classified as Ureilite. [show all] Search for other: Achondrites, Ureilites | ||||||||||||||||||||
| Comments: | Field number: 5641 | ||||||||||||||||||||
| Writeup |
Writeup from AMN 16(1):
Sample No.: LEW88772 Location: Lewis Cliff Dimensions (cm): 2.4 x 2.0 x 1.1 Weight (g): 7.4 Meteorite Type: Ureilite
Macroscopic Description: Cecilia Satterwhite The fusion crust, which covers 95% of the exterior of the meteorite, is black and contains abundant oxidation haloes. The interior of LEW88772 is browish-black in color with small light gray inclusions in the crystalline matrix. Some areas are weathered to an orangish-brown.
Thin Section (,2) Description: Brian Mason The section shows a coarse-grained aggregate of anhedral olivine and minor pyroxene (maximum grain size 2.4) rimmed by black carbonaceous material. Well-preserved fusion crust is present along one edge. Under cross polars the olivine and pyroxene grains are seen as a mosaic of tiny grains averaging 0.05 mm across, evidently a shock effect. Microprobe analyses show olivine of variable composition, Fa11-18, mean Fa16; pyroxene composition is Wo11Fs11. The meteorite is a ureilite.
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| Data from: MB76 Table 2 Line 4612: |
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| References: | Published in Antarctic Meteorite Newsletter 16(1) (1993), 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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