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Lewis Cliff 85383
Basic information Name: Lewis Cliff 85383
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 85383
Observed fall: No
Year found: 1985
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 18.5 g
Antarctic Meteorite Newsletter:  AMN 13(2)  (1990)  H3
Meteoritical Bulletin:  MB 76  (1994)  H3.7
NHM Catalogue:  5th Edition  (2000)  H3.7
MetBase:  v. 7.1  (2006)  H3.7
Recommended:  H3.7    [explanation]

This is 1 of 75 approved meteorites classified as H3.7.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Field number: 2453
Writeup from AMN 13(2):

Sample No. LEW85383

Location: Lewis Cliff

Dimensions (cm): 3x2.5x2

Field Number: 2453

Weight (g): 18.5

Meteorite Type: H3 chondrite


Macroscopic Description: Roberta Score

This angular stone is completely covered with polished black fusion crust. The interior is heavily oxidized, masking any structure present.


Thin Section (,3) Description: Brian Mason

The section shows abundant chondrules and chondrule fragments, up to 1.5 mm across, in a minor amount of finely granular matrix containing considerable nickel-iron and lesser troilite. A variety of chondrule types is present, mostly porphyritic and granular olivine and olivine-pyroxene, but some cryptocrystalline and radiating pyroxene chondrules were seen. Weathering is extensive, with brown limonitic staining throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa6-23, mean Fa17 (CV FeO is 26); pyroxene, Fs2-18. The meteorite is classified as an H3 chondrite, estimated H3.7.


Data from:
  Table 2
  Line 2955:
Origin or pseudonym:Upper Ice Tongue
Mass (g):18.5
Weathering grade:C
Fayalite (mol%):6-23
Ferrosilite (mol%):2-18
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References: Published in Antarctic Meteorite Newsletter 13(2) (1990), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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     Catalogue of Meteorites:   (84° 17'S, 161° 5'E)
     Recommended::   (84° 16' 27"S, 161° 20' 46"E)
Note: the NHM and MetBase coordinates are 3.1 km apart

     This is 1 of 41899 approved meteorites from Antarctica (plus 3802 unapproved names)
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