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LaPaz Icefield 03780
Basic information Name: LaPaz Icefield 03780
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 03780
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 21.8 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 27(3)  (2004)  Aubrite
Meteoritical Bulletin:  MB 89  (2005)  Aubrite
MetBase:  v. 7.1  (2006)  Aubrite
Recommended:  Aubrite    [explanation]

This is 1 of 66 approved meteorites classified as Aubrite.   [show all]
Search for other: Achondrites, Aubrites, Enstatite achondrites, and Enstatite-rich meteorites
Writeuphelp
Writeup from AMN 27(3):
Sample No.: LAP 03780; LAP 031269; LAP 031372
Location: LaPaz Icefield
Field No.: 16745; 16191; 16719
Dimensions (cm):   3.5x2.5 x 2.0
2.5x2.5x2.0
3.0x2.0x2.5
Weight (g): 21.807; 12.930; 17.613
Meteorite Type: Aubrite
   
LAP03780 LAP031269
LAP031372  

Macroscopic Description: Kathleen McBride
The exteriors are white without any fusion crust. The interiors are white matrix with brown circular to oval shaped inclusions.

Thin Section (,2) Description: Tim McCoy, Linda Welzenbach
The sections consist of an aggregate of coarse (up to 5 mm), heavily shocked enstatite grains with minor to trace abundances of diopside, metal, troilite, alabandite, and daubreelite. Silicates are essentially FeO-free enstatite (Fs0Wo1) and diopside (Fs0Wo43). The meteorites are aubrites and may be paired with LAP 02233. They were found over a range of 1.5 km.

LAP 03780 - Cross-Polarized Light LAP 03780 - Plane-Polarized Light LAP 031269 - Cross-Polarized Light
LAP 03780
Cross-Polarized Light
LAP 03780
Plane-Polarized Light
LAP 031269
Cross-Polarized Light
LAP 031269 - Plane-Polarized Light LAP 031372 - Cross-Polarized Light LAP 031372 - Plane-Polarized Light
LAP 031269
Plane-Polarized Light
LAP 031372
Cross-Polarized Light
LAP 031372
Plane-Polarized Light

Data from:
  MB89
  Table A1
  Line 248:
Origin or pseudonym:Pinnacle Vista Estates
Mass (g):21.81
Class:Aub
Weathering grade:B/C
Ferrosilite (mol%):0
Comments:02233 pairing group
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 27(3) (2004), JSC, Houston
Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)
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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:
Dr Carlton Allen, JSC-KT, NASA         
Geography:

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

Statistics:
     This is 1 of 38674 approved meteorites from Antarctica (plus 5051 unapproved names)
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