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LaPaz Icefield 03569
Basic information Name: LaPaz Icefield 03569
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 03569
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 814 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 27(3)  (2004)  Diogenite
Meteoritical Bulletin:  MB 89  (2005)  Diogenite
MetBase:  v. 7.1  (2006)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 421 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Writeuphelp
Writeup from AMN 27(3):
Sample No.: LAP 03569
Location: LaPaz Ice Field
Field No.: 16919
Dimensions (cm):   10.5x8.0x7.0
Weight (g): 813.7
Meteorite Type: Diogenite
    LAP03569 LAP03569

Macroscopic Description: Kathleen McBride
75% of the exterior is covered with chocolate brown fusion crust. The crust has a slight sheen with polygonal fractures. The exposed matrix is tan and has weathered, large green inclusions. The interior matrix is light gray with olive green angular inclusions.

Thin Section (,2) Description: Tim McCoy, Linda Welzenbach

LAP 03569 - Cross-Polarized Light LAP 03569 - Plane-Polarized Light
Cross-Polarized Light Plane-Polarized Light
The section shows a groundmass of coarse (up to 3 mm) comminuted pyroxene, with lesser olivine. Orthopyroxene has a composition of Fs22Wo2 and an Fe/Mn ratio of ~28; olivine is Fa27. The meteorite is a diogenite and is compositionally similar to LAP 91900 and LAP 02216. It could be paired with the latter, although it contains much more abundant olivine.

Data from:
  MB89
  Table A1
  Line 232:
Origin or pseudonym:Canyonero Mesa (West Paradise Palms)
Mass (g):813.7
Class:Dio
Weathering grade:A
Fayalite (mol%):27
Ferrosilite (mol%):22
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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