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Lewis Cliff 88516 | |||||||||||||||||||||
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Basic information | Name: Lewis Cliff 88516 This is an OFFICIAL meteorite name. Abbreviation: LEW 88516 Observed fall: No Year found: 1988 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: ![]() | ||||||||||||||||||||
Classification history: |
This is 1 of 298 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all] Search for other: Martian meteorites | ||||||||||||||||||||
Comments: | Field number: 5348 | ||||||||||||||||||||
Writeup![]() |
Writeup from AMN 14(2):
Sample No.: LEW88516 Location: Lewis Cliff Field Number: 5348 Dimensions (cm): 2 x 2 x 1.5 Weight (g): 13.2 Meteorite Type: Shergottite
Macroscopic Description: Cecilia Satterwhite Pitted and mostly shiny fusion crust covers 80% of LEW88516. The sample's interior consists of green/black matrix which appears glassy and has conchoidal fractures. Several dark colored inclusions are present.
Thin Section (,3) Description: Brian Mason The section shows that this meteorite is an achondrite with the approximate composition (volume percent): olivine 50, pyroxene 35, maskelynite 8, opaques (mostly chromite, with a little troilite) 2, brown glass 5. Olivine is present as rounded anhedral to subhedral grains, up to 1.8 mm long, and weakly pleochroic in pale brown. Pyroxene occurs as colorless subhedral grains up to 3 mm long, showing undulose extinction, and maskelynite is interstitial to the olivine and pyroxene. Dark brown glass containing numerous birefringent needly-like crystals (probably olivine) occurs as veinlets and patches up to 1.5 mm across. A little fusion crust is present on one edge. Microprobe analyses gave the following compositions: olivine, Fa33; pyroxene, Wo5Fs28; maskelynite, An53. The meteorite is a shergottite; it resembles ALHA 77005 in texture and mineral compositions.
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Data from: MB76 Table 2 Line 4362: |
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References: | Published in Antarctic Meteorite Newsletter 14(2) (1991), JSC, Houston Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:![]() |
Statistics: This is 1 of 43857 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
Proximity search: |