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| Lewis Cliff 85305 | |||||||||||||||||||||||||
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| Basic information | Name: Lewis Cliff 85305 This is an OFFICIAL meteorite name. Abbreviation: LEW 85305 Observed fall: No Year found: 1985 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  40.8 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 126 approved meteorites classified as Eucrite-unbr. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||
| Comments: | Field number: 2002 | ||||||||||||||||||||||||
| Writeup |
Writeup from AMN 9(3):
Sample No.: LEW85305 Location: Lewis Cliff Weight (g): 40.8 Field No.: 2002 Dimensions (cm): 3 x 3 x 1.5 Meteorite Type: Eucrite
Macroscopic Description: Roberta Score LEW85305 has a rectangular shape and is completely covered with shiny fusion crust. Flow marks are apparent in the fusion crust. The interior has a granular texture, plagioclase is evenly disseminated throughout the brownish matrix.
Thin Section (,4) Description: Brian Mason The section shows a granular aggregate of pale brown pyroxene and colorless pyroxene, with accessory opaques; a small amount of an SiO2 polymorph, probably tridymite, is present. The meteorite is unbrecciated, but the pyroxene grains (and to a lesser extent the plagioclase) are considerably granulated. Microprobe analyses show pyroxene compositions ranging almost continuously from Wo6Fs57 to Wo37Fs31, with fairly uniform En content. Plagioclase composition is An84-88. The meteorite is an eucrite; it resembles Ibitira in texture and mineral compositions. | ||||||||||||||||||||||||
| Data from: MB76 Table 2 Line 2880: |
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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 43700 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||
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