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| Lewis Cliff 85339 | |||||||||||||||||||||
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| Basic information | Name: Lewis Cliff 85339 This is an OFFICIAL meteorite name. Abbreviation: LEW 85339 Observed fall: No Year found: 1985 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  28.8 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 51 approved meteorites classified as L3.4. [show all] Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||
| Comments: | Field number: 2077 | ||||||||||||||||||||
| Writeup |
Writeup from AMN 12(3):
Sample No.: LEW85339 Location: Lewis Cliff Dimensions (cm): 3.5x3x2 Field Number: 2077 Weight (g): 28.8 Meteorite Type: L3 chondrite
Macroscopic Description: René Martinet Polygonally fractured fusion crust completely covers this small specimen. The interior is light gray with chondrules and other inclusions measuring up to ~3 mm in diameter. One dark haloed inclusion (metallic?) is ~7 mm across.
Thin Section (,3) Description: Brian Mason The section shows a close-packed aggregate of chondrules and chondrule fragments, up to 2.1 mm across, in a minimum amount of dark matrix which contains some troilite and a little nickel-iron. A variety of chondrule types is present, including granular and porphyritic olivine and olivine-pyroxene, barred olivine, and fine-grained radiating pyroxene. Considerable weathering is indicated by brown limonitic staining throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa1-30, mean Fa14 (CV FeO is 59); pyroxene, Fs3-13. The small amount of nickel-iron suggests L group, and variability of olivine and pyroxene compositions type 3; hence the meteorite is classified as a L3 chondrite (estimated L3.4). | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 2912: |
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| References: | Published in Antarctic Meteorite Newsletter 12(3) (1989), 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 43856 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
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