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LaPaz Icefield 031166
Basic information Name: LaPaz Icefield 031166
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 031166
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 15.1 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 29(2)  (2006)  CM1-2
Meteoritical Bulletin:  MB 92  (2007)  CM1-2
Recommended:  CM1/2    [explanation]

This is 1 of 26 approved meteorites classified as CM1/2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 1), CM chondrites, and CM-CO clan chondrites
Comments: Approved 1 Sep 2006
Revised 30 May 2009: Change to CM1/2 from 1-2: not described as a breccia
Writeuphelp
Writeup from AMN 29(2):
Sample No.: LAP 031166
Location: LaPaz Ice Field
Field No.: 16363
Dimensions (cm):   3.5x2.25x1.5
Weight (g): 15.083
Meteorite Type: CM1-2 Chondrite


Macroscopic Description: Kathleen McBride
Purplish black fractured fusion crust covers 80% of the exterior. The interior is a dull black matrix with tiny white chondrules. This meteorite is soft and moderately friable.


Thin Section (,2) Description: Tim McCoy
The section consists of a few small chondrules (up to 0.5 mm) that have been nearly replaced by phyllosilicate, with only a few remaining unaltered olivines, set in an Fe-rich serpentine matrix. Sulfide and carbonate grains are present. Olivine is Fa0-1. The meteorite is a highly altered CM chondrite of petrologic type 1-2.



Thin Section Images

Cross-Polarized LightPlane-Polarized Light
LAP 031166 - Cross-Polarized Light LAP 031166 - Plane-Polarized Light



Lab Images

LAP 031166 Image Interior

Data from:
  MB92
  Table 3
  Line 354:
Mass (g):15.1
Class:CM1-2
Weathering grade:B
Fayalite (mol%):0-1
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 44048 approved meteorites from Antarctica (plus 3802 unapproved names)

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