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LaPaz Icefield 03786
Basic information Name: LaPaz Icefield 03786
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 03786
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 22.4 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 29(2)  (2006)  CM2
Meteoritical Bulletin:  MB 92  (2007)  CM2
Recommended:  CM2    [explanation]

This is 1 of 540 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Comments: Approved 1 Sep 2006
Writeuphelp
Writeup from AMN 29(2):
Sample No.: LAP 03786; LAP 031371
Location: LaPaz Ice Field
Field No.: 16835; 16954
Dimensions (cm):   4.75x2.0x2.0; 3.0x2.0x1.25
Weight (g): 22.395; 8.813
Meteorite Type: CM2 Chondrite


Macroscopic Description: Kathleen McBride
The exterior has purple black fusion crust with polygonal fractures. The interior is black and powdery with light <1 mm sized chondrules/inclusions.


Thin Section (,2) Description: Tim McCoy and Emma Bullock
The sections consist of moderately abundant small chondrules (up to 0.5 mm), mineral grains and CAIs set in a black matrix; metal and sulfide grains are present. Olivine compositions are Fa1-40, orthopyroxene is Fs1-30. The matrix consists pre-dominantly of an Fe-rich serpentine. The meteorites are CM2 chondrites.



Thin Section Images

Cross-Polarized
Light LAP 03786
Plane-Polarized
Light LAP 03786
Reflected
Light LAP 03786
LAP 03786 - Cross-Polarized Light
LAP 03786 - Plane-Polarized Light LAP 03786 - Reflected Light
Cross-Polarized
Light LAP 031371
Plane-Polarized
Light LAP 031371
Reflected
Light LAP 031371
<a href=LAP 031371 - Cross-Polarized Light">
<a href=LAP 031371 - Plane-Polarized Light"> <a href=LAP 031371 - Reflected Light">



Lab Images

LAP 03786,0 ,1, ,3 Image Interior
<a href=LAP 031371,0 ,1 Image Interior" border="0">


Data from:
  MB92
  Table 3
  Line 263:
Mass (g):22.4
Class:CM2
Weathering grade:A/B
Fayalite (mol%):1-40
Ferrosilite (mol%):6
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:
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Photos:
CreditPhotos
Photographs from AMN:
JSC A photo is in the write-up above
Geography:

Antarctica
Coordinates:Unknown.

Statistics:
     This is 1 of 40129 approved meteorites from Antarctica (plus 4494 unapproved names)

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