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LaPaz Icefield 02233
Basic information Name: LaPaz Icefield 02233
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 02233
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 18.1 g
Antarctic Meteorite Newsletter:  AMN 26(2)  (2003)  Aubrite
Meteoritical Bulletin:  MB 88  (2004)  Aubrite
MetBase:  v. 7.1  (2006)  Aubrite
Recommended:  Aubrite    [explanation]

This is 1 of 76 approved meteorites classified as Aubrite.   [show all]
Search for other: Achondrites, Aubrites, Enstatite achondrites, and Enstatite-rich meteorites
Writeup from AMN 26(2):
Sample No.: LAP 02233
Location: LaPaz Ice field
Field No.: 15156
Dimensions (cm):   3.0x2.5x2.0
Weight (g): 18.056
Meteorite Type: Aubrite

Macroscopic Description: Kathleen McBride
This meteorite has no fusion crust. The interior is striated, snow white crystalline material that is loosely held together. There are numerous fractures and "canyons". Accessory minerals are rounded, black and rootbeer colored (1-2 mm in size) crystals. Small areas of rust are present.

Thin Section (,4) Description: Tim McCoy, Linda Welzenbach

LAP 02233 - Plane-Polarized Light LAP 02233 - Cross-Polarized Light
Plane-Polarized Light Cross-Polarized Light
The section consists of an aggregate of coarse (up to 5 mm), heavily shocked enstatite grains with minor to trace abundances of diopside, Si-bearing metal, Ti-bearing troilite, oldhamite, and a Mn,Mg,Fe-sulfide. Silicates are essentially FeO-free enstatite (Fs0Wo1) and diopside (Fs0Wo45). The meteorite is an aubrite.

Skip TS Images lap02233
LAP 02233 - Plane-Polarized Light LAP 02233 - Cross-Polarized Light LAP 02233 - Plane-Polarized Light LAP 02233 - Cross-Polarized Light
Plane-Polarized Light Cross-Polarized Light Plane-Polarized Light Cross-Polarized Light
Data from:
  Table A1
  Line 21:
Mass (g):18.056
Weathering grade:B
Ferrosilite (mol%):0
Plots: O isotopes:  
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 26(2) (2003), JSC, Houston
Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
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Photographs from AMN:
Photograph from unknown source A photo is in the write-up above
Photos from the Encyclopedia of Meteorites:
Dr Carlton Allen, JSC-KT, NASA         

     Recommended::   (86° 22'S, 70° 0'W)

     This is 1 of 43500 approved meteorites from Antarctica (plus 3802 unapproved names)
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