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LaPaz Icefield 03719
Basic information Name: LaPaz Icefield 03719
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 03719
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 62 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 27(3)  (2004)  Aubrite-an
Meteoritical Bulletin:  MB 89  (2005)  Aubrite-an
MetBase:  v. 7.1  (2006)  Aubrite-an
Recommended:  Aubrite-an    [explanation]

This is 1 of 6 approved meteorites classified as Aubrite-an.   [show all]
Search for other: Achondrites, Aubrites, Enstatite achondrites, and Enstatite-rich meteorites
Writeuphelp
Writeup from AMN 27(3):
Sample No.: LAP 03719
Location: LaPaz Ice Field
Field No.: 16255
Dimensions (cm):   5.5x4.0x2.5
Weight (g): 62.021
Meteorite Type: Aubrite (Anomalous)
    LAP03719

Macroscopic Description: Kathleen McBride
The exterior has 40% fusion crust, gray-brown in color. The interior is a white matrix with brown circular to oval shaped inclusions. The matrix is stained brown and has lots of rust/weathering.

Thin Section (,2) Description: Tim McCoy, Linda Welzenbach
The section is an unbrecciated rock consisting of essentially FeO-free enstatite, diopside and olivine with minor metal, troilite, daubreelite and alabandite. Enstatites reach 1 cm in maximum dimension and contacts between enstatite grains are often interfingering. Blebby diopside exsolution occurs within enstatite and at enstatite-enstatite grain boundaries. Olivine, which occupies ~20% of the section, reaches 3 mm. Although the pyroxene textures are reminiscent of some aubrite clasts, the unbrecciated nature, texture and olivine abundance in this aubrite are unique.


LAP 03719 - Cross-Polarized Light LAP 03719 - Plane-Polarized Light LAP 03719 - Cross-Polarized Light LAP 03719 - Cross-Polarized Light
LAP 03719
Cross-Polarized Light
LAP 03719
Plane-Polarized Light
LAP 03719
Cross-Polarized Light
LAP 03719
Cross-Polarized Light
Data from:
  MB89
  Table A1
  Line 247:
Origin or pseudonym:Whispering Bamboo Grove
Mass (g):62.02
Class:Aub-an
Weathering grade:B
Fayalite (mol%):0
Ferrosilite (mol%):0
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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