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LaPaz Icefield 04838
Basic information Name: LaPaz Icefield 04838
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 04838
Observed fall: No
Year found: 2004
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 324 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 29(2)  (2006)  Howardite
Meteoritical Bulletin:  MB 92  (2007)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 374 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 1 Sep 2006
Writeuphelp
Writeup from AMN 29(2):
Sample No.: LAP 04838
Location: LaPaz Ice Field
Field No.: 17167
Dimensions (cm):   6.5x6.0x4.5
Weight (g): 323.5
Meteorite Type: Howardite


Macroscopic Description: Kathleen McBride
90% of the exterior has thick, shiny black fusion crust with a ropy texture. Several vugs are present. The interior is a light gray matrix with numerous clasts of various sizes and colors.


Thin Section (,2) Description: Tim McCoy and Valerie Reynolds
The section shows a groundmass of comminuted pyroxene and plagioclase (up to 0.5 mm) with coarse-grained basaltic clasts, isolated mineral grains and impact-produced glass spherules and clasts. Pyroxene exhibits a broad range of compositions (Fs23-54Wo3-36) and plagioclase of An89. The Fe/Mn ratio of the pyroxene is ~30. The meteorite is a howardite.



Thin Section Images

Cross-Polarized LightPlane-Polarized Light
LAP 04838 - Cross-Polarized Light LAP 04838 - Plane-Polarized Light



Lab Images

LAP 04838,0 ,1 ,2 Image

Data from:
  MB92
  Table 3
  Line 316:
Mass (g):323.5
Class:How
Weathering grade:B
Ferrosilite (mol%):23-54
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 29(2) (2006), JSC, Houston
Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photographs from AMN:
JSC A photo is in the write-up above
Geography:

Antarctica
Coordinates:Unknown.

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

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