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LaPaz Icefield 02422
Basic information Name: LaPaz Icefield 02422
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 02422
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 1.99 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 27(3)  (2004)  CM1
Meteoritical Bulletin:  MB 89  (2005)  CM1
MetBase:  v. 7.1  (2006)  CM1
Recommended:  CM1    [explanation]

This is 1 of 27 approved meteorites classified as CM1.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 1), CM chondrites, and CM-CO clan chondrites
Writeuphelp
Writeup from AMN 27(3):
Sample No.: LAP 02422
Location: LaPaz Ice Field
Field No.: 15985
Dimensions (cm):   1.5x1.0x1.25
Weight (g): 1.994
Meteorite Type: CM1 Chondrite
    LAP02422

Macroscopic Description: Kathleen McBride
Small black patches of fusion crust are visible on the exterior surface. The interior is gray in color and is fine grained. The chondrules/clasts are dark gray in color.

Thin Section (,2) Description: Tim McCoy, Cari Corrigan

LAP 02422 - Plane-Polarized Light LAP 02422 - Reflected Light
Plane-Polarized Light Reflected Light
The section consists of a few small chondrules (up to 0.5 mm) that have been completely replaced by phyllosilicate set in an Fe-rich serpentine matrix. No isolated mineral grains or CAIs are apparent; sulfide and carbonate grains are present. Unaltered olivine or pyroxene grains of sufficient size for microprobe analyses were not found. The meteorite is a highly altered CM chondrite probably of petrologic type 1.
Data from:
  MB89
  Table A1
  Line 220:
Mass (g):1.99
Class:CM1
Weathering grade:B
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 40719 approved meteorites from Antarctica (plus 4494 unapproved names)
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