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David Glacier 92302
Basic information Name: David Glacier 92302
     This is an OFFICIAL meteorite name.
Abbreviation: DAV 92302
Observed fall: No
Year found: 1992
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 58.8 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 17(1)  (1994)  LL3.6
Meteoritical Bulletin:  MB 79  (1996)  LL3.6
NHM Catalogue:  5th Edition  (2000)  LL3.6
MetBase:  v. 7.1  (2006)  LL3.6
Recommended:  LL3.6    [explanation]

This is 1 of 20 approved meteorites classified as LL3.6.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeuphelp
Writeup from AMN 17(1):

Sample No.: DAV92302; 92306

Location: David Glacier

Dimensions (cm): 5.5 x 3.0 x 2.0; 1.5 x 1.0 x 0.8

Weight (g): 58.8; 1.6

Meteorite Type: LL3.6 chondrite

 

Macroscopic Description: Carol Schwartz

Both specimens are angular-shaped with thin weathered fusion crust. DAV92302, the larger specimen, has an interior of medium gray matrix which is moderately weathered. Less than 2 mm light-colored inclusions are abundant. This is a very coherent meteorite. DAV92306 also has a gray interior with dark and light colored inclusions and is less weathered.

 

Thin Section (DAV92302,2; 92306,2) Description: Brian Mason

The sections are so similar that a single description will suffice; the meteorites are probably paired. They show a closed-packed aggregate of chondrules and chondrule fragments, up to 2.4 mm across, in a small amount of dark matrix which includes a few grains of nickel-iron and troilite. Weathering is extensive, with brown limonitic staining throughout the sections. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa11-32; pyroxene, Fs4-18. The meteorite is classified as an LL3 chondrite (estimate LL3.6).

 

Data from:
  MB79
  Table 2
  Line 15:
Mass (g):58.8
Class:LL3.6
Weathering grade:B
Fayalite (mol%):11-29
Ferrosilite (mol%):8-18
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 17(1) (1994), JSC, Houston
Published in Meteoritical Bulletin, no. 79, MAPS 31, A161-A174 (1996)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (75° 19'S, 162° 0'E)
     Recommended::   (75° 19'S, 162° 0'E)

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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