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Lewis Cliff 88415
Basic information Name: Lewis Cliff 88415
     This is an OFFICIAL meteorite name.
Abbreviation: LEW 88415
Observed fall: No
Year found: 1988
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 7.4 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 14(1)  (1991)  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: 5164
Writeuphelp
Writeup from AMN 14(1):

Sample No: LEW88415

Location: Lewis Cliff

Field Number: 5164

Dimensions (cm): 2.6 x 2.1 x 1

Weight (g): 7.4

Meteorite Type: H3 chondrite

 

Macroscopic Description: Robbie Marlow

Weathered brown fusion crust covers approximately three-quarters of the exterior of this unequilibrated chondrite. The millimeter sized inclusions seen have weathered to an orangish color. A small amount of evaporite deposit was noted.

 

Thin Section (,2) Description: Brian Mason

The section shows numerous chondrules and chondrule fragments, up to 1.8 mm across, in a granular matrix of olivine and pyroxene with minor amounts of nickel-iron and troilite. Weathering is minor, indicated by a little brown limonitic staining. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa8-25, mean Fa19 (CV FeO is 23); pyroxene, Fs6-16. The amount of nickel-iron suggests H group, and the variability of olivine and pyroxene compositions type 3, hence the meteorite is classified as an H3 chondrite (estimated H3.7).

 

Data from:
  MB76
  Table 2
  Line 4263:
Origin or pseudonym:Lower Ice Tongue
Mass (g):7.4
Class:H3.7
Weathering grade:B/Ce
Fayalite (mol%):8-25
Ferrosilite (mol%):6-16
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 14(1) (1991), 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° 14' 14"S, 161° 27' 2"E)
Note: the NHM and MetBase coordinates are 6.6 km apart

Statistics:
     This is 1 of 39179 approved meteorites from Antarctica (plus 5051 unapproved names)
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