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Lewis Cliff 88001
Basic information Name: Lewis Cliff 88001
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88001
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 44.9 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 13(2)  (1990)  C2
Meteoritical Bulletin:  MB 76  (1994)  C2
NHM Catalogue:  5th Edition  (2000)  C2
MetBase:  v. 7.1  (2006)  CM2
Antarctic Meteorite Newsletter:  AMN 31(1)  (2008)  CM2
Recommended:  CM2    [explanation]

This is 1 of 541 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Comments: Field number: 4481
Writeuphelp
Writeup from AMN 13(2):

Sample No. LEW88001; LEW88002; LEW88003

Location: Lewis Cliff

Dimensions (cm): 4.7x3.5x2.5; 2.7x1.5x1.3; 1.5x1.2x1.4

Field Number: 4481; 5698; 5665

Weight (g): 44.9; 7.2; 1.7

Meteorite Type: C2 chondrite

 

Macroscopic Description: Robbie Marlow

Dull black and brown fusion crust covers 95% of these 3 carbonaceous chondrites. Evaporite deposit was noted on the exteriors of LEW88001 and 88002. The interior of LEW88001 is dark gray and contains numerous "rusty" inclusions. Evaporites pervade this specimen. LEW88002 and 88003 are less weathered and contain numerous submillimeter sized white inclusions.

 

Thin Section (LEW88001,4; LEW88002,3; LEW88003,3) Description: Brian Mason

These meteorites are C2 carbonaceous chondrites, and are so similar that a single description will suffice. The sections show numerous small (up to 0.6 mm across) chondrules and mineral grains in a black matrix. Chondrules consist largely of olivine, with minor pyroxene; mineral grains are olivine, pyroxene, and a little calcite. Microprobe analyses show that most of the olivine has composition close to Mg2SiO4, but with a few more iron-rich grains; pyroxene is clinoenstatite, with composition range Fs1.7.

 

Data from:
  MB76
  Table 2
  Line 3859:
Origin or pseudonym:Upper Ice Tongue
Mass (g):44.9
Class:C2
Weathering grade:Ce
Fayalite (mol%):1-44
Ferrosilite (mol%):1-7
Comments:NTL=<1; 88001 pairing group
Catalogs:
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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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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (84° 17'S, 161° 5'E)
     Recommended::   (84° 16' 32"S, 161° 26' 59"E)
Note: the NHM and MetBase coordinates are 4.2 km apart

Statistics:
     This is 1 of 40129 approved meteorites from Antarctica (plus 4494 unapproved names)
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