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Lewis Cliff 88180 | |||||||||||||||||||||||||||||
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Basic information | Name: Lewis Cliff 88180 This is an OFFICIAL meteorite name. Abbreviation: LEW 88180 Observed fall: No Year found: 1988 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: ![]() | ||||||||||||||||||||||||||||
Classification history: |
This is 1 of 8 approved meteorites classified as EH5. [show all] Search for other: EH chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites | ||||||||||||||||||||||||||||
Comments: | Field number: 5171 | ||||||||||||||||||||||||||||
Writeup![]() |
Writeup from AMN 13(3):
Sample No. LEW88180 Location: Lewis Cliff Dimensions (cm): 3.8 x 2 x 1 Field Number: 5171 Weight (g): 46.5 Meteorite Type: E6 chondrite
Macroscopic Description: Cecilia Satterwhite This smooth and rounded meteorite is covered with brown weathered fusion crust. A large deposit of evaporite minerals covers some of the fusion crust. The interior is composed of fine-grained blue-black matrix. Oxidation is moderate but evaporite deposit is abundant in the interior.
Thin Section (,2) Description: Brian Mason Chondrules and chondrule fragments are barely recognizable, the section consisting largely of enstatite in prisms up to 0.3 mm long; the section also shows a considerable amount (~25%) of nickel-iron and minor amounts of sulfides and plagioclase. The meteorite appears to be unweathered. Microprobe analyses show that most of the enstatite is almost pure MgSiO3, with FeO less than 0.3%, but rare grains with FeO up to 9.2% were measured. One grain of plagioclase was analysed; it is almost pure albite, with CaO 0.5%, K2O 1.1%. The nickel-iron contains 2.4% Si. Rare grains of a silica polymorph, tridymite or cristobalite, were detected. The meteorite is an enstatite chondrite, classified E6. | ||||||||||||||||||||||||||||
Data from: MB76 Table 2 Line 4036: |
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References: | Published in Antarctic Meteorite Newsletter 13(3) (1990), JSC, Houston Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:![]() |
Statistics: This is 1 of 43856 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||||||
Proximity search: |