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LaPaz Icefield 03632
Basic information Name: LaPaz Icefield 03632
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 03632
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 92.6 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 27(3)  (2004)  Lunar (basalt)
Meteoritical Bulletin:  MB 89  (2005)  Lunar-basaltic
MetBase:  v. 7.1  (2006)  Lunar (basalt)
Recommended:  Lunar (basalt)    [explanation]

This is 1 of 23 approved meteorites classified as Lunar (basalt).   [show all]
Search for other: Lunar meteorites
Writeuphelp
Writeup from AMN 27(3):
Sample No.: LAP 03632
Location: LaPaz Ice Field
Field No.: 16823
Dimensions (cm):   5.5x3.5x3.0
Weight (g): 92.566
Meteorite Type: Lunar-Basalt
    LAP03632 LAP03632

Macroscopic Description: Kathleen McBride
~75% of the exterior has shiny black fusion crust. The interior is pinkish-tan with white linear minerals and glass veins. This sample is paired with the LAP samples from the '02 season.

Thin Section (,2) Description: Tim McCoy, Linda Welzenbach
The section consists of a coarse-grained unbrecciated basalt with elongate pyroxene (up to 0.5 mm) and plagioclase laths (up to 1 mm) (~60:40 px:plag), rare phenocrysts of olivine (up to 1 mm) and interstitial oxides and late-stage mesostasis. Shock effects include undulatory extinction in pyroxene and shock melt veins and pockets. Microprobe analyses reveal pigeonite to augite of Fs27-52Wo12-33, plagioclase is An87Or0-1 and a single olivine phenocryst is Fa32-99. The Fe/Mn ratio in the pyroxenes averages ~60. The meteorite is a lunar olivine-bearing basalt and is almost certainly paired with LAP 02205, LAP 02226, LAP 02224 and LAP 02436.

LAP 03632 - Cross-Polarized Light LAP 03632 - Plane-Polarized Light LAP 03632 - Cross-Polarized Light LAP 03632 - Plane-Polarized Light
LAP 03632
Cross-Polarized Light 		LAP 03632
Plane-Polarized Light 		LAP 03632
Cross-Polarized Light 		LAP 03632
Plane-Polarized Light

Data from:
  MB89
  Table A1
  Line 242:
Origin or pseudonym:Bridle Path Trail
Mass (g):92.57
Class:Lunar-B
Weathering grade:B
Fayalite (mol%):32-99
Ferrosilite (mol%):27-52
Comments:02205 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 43352 approved meteorites from Antarctica (plus 3802 unapproved names)
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