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| Lewis Cliff 86258 | |||||||||||||||||||||||||
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| Basic information | Name: Lewis Cliff 86258 This is an OFFICIAL meteorite name. Abbreviation: LEW 86258 Observed fall: No Year found: 1986 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  24.1 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 119 approved meteorites classified as CK4. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites | ||||||||||||||||||||||||
| Comments: | Field number: 2345 | ||||||||||||||||||||||||
| Writeup |
Writeup from AMN 11(1):
Sample No.: LEW86258 Location: Lewis Cliff Weight (g): 24.1 Field No.: 2345 Dimensions (cm): 3.5x3x2 Meteorite Type: C4 Chondrite
Macroscopic Description: René Martinez This specimen is gray and friable with black chondrules protruding from weathered surfaces. About 40% of its exterior surface is covered by polygonally fractured black fusion crust.
Thin Section (,3) Description: Brian Mason The section shows a few chondrules in a matrix consisting largely of fine-grained olivine (grains ranging up to 0.1 mm), with a little pyroxene, plagioclase, and opaques (the opaques are almost entirely magnetite, with a little fine-grained nickel-iron). Most chondrules are about 1 mm in diameter and consist of granular olivine; one large chondrule, 2.5 mm across, consists of radiating plagioclase laths up to 0.8 mm long in a matrix of granular olivine and diopside. Analyses give the following compositions: olivine, Fa29; diopside, Wo42Fs5 with 4.8% Al2O3, 1.9% TiO2; plagioclase, An84-89. The meteorite is classified as a C4 chondrite. | ||||||||||||||||||||||||
| Data from: MB76 Table 2 Line 3294: |
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| References: | Published in Antarctic Meteorite Newsletter 11(1) (1988), 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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