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LaPaz Icefield 031280
Basic information Name: LaPaz Icefield 031280
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 031280
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 17.8 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 29(1)  (2006)  Eucrite-br
Meteoritical Bulletin:  MB 91  (2007)  Eucrite-br
Recommended:  Eucrite-br    [explanation]

This is 1 of 165 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 21 Feb 2006
Writeuphelp
Writeup from AMN 29(1):
Sample No.: LAP 031280
Location: LaPaz Ice Field
Field No.: 16046
Dimensions (cm):   4.0x2.75x1.0
Weight (g): 17.752
Meteorite Type: Eucrite (Brecciated)
LAP 031280


Macroscopic Description: Kathleen McBride
Shiny, rough brown/black fusion crust covers 50% of this achondrite's exterior. The interior is a sandy textured, tan colored matrix with gray inclusions.

Thin Section (,2) Description: Tim McCoy and Linda Welzenbach
The meteorite is a dominated by a fine-grained (50-100 micron grain size) basaltic host with coarser-grained areas that may be clasts incorporated prior to metamorphism. Pyroxene is exsolved on a 1-20 micron scale. Orthopyroxene analyses range to Fs60Wo5 and augite to Fs32Wo40. Plagioclase is An88Or0.5. The Fe/Mn ratio of the pyroxene is ~30. The meteorite is a eucrite.

Cross-Polarized LightPlane-Polarized LightCross-Polarized LightPlane-Polarized Light
LAP 031280 - Cross-Polarized Light LAP 031280 - Plane-Polarized Light
LAP 031280 - Cross-Polarized Light LAP 031280 - Plane-Polarized Light
Data from:
  MB91
  Table 4
  Line 647:
Mass (g):17.8
Class:Euc (brecciated)
Weathering grade:B
Ferrosilite (mol%):60
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 29(1) (2006), JSC, Houston
Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)
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Photos:
CreditPhotos
Photographs from AMN:
Photograph from unknown source A photo is in the write-up above
Photos from the Encyclopedia of Meteorites:
unknown      
Geography:

Antarctica
Coordinates:Unknown.

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

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