header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 14 Oct 2020
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Include past classifications in search
Limit to approved meteorite names
Search text:  
LaPaz Icefield 04771
Basic information Name: LaPaz Icefield 04771
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 04771
Observed fall: No
Year found: 2004
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 0.6 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 30(1)  (2007)  CM2
Meteoritical Bulletin:  MB 92  (2007)  CM2
Recommended:  CM2    [explanation]

This is 1 of 541 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 16 Feb 2007
Writeuphelp
Writeup from AMN 30(1):
Sample No.: LAP 04771
Location: LaPaz Ice Field
Field No.: 17429
Dimensions (cm):   1.0x0.75x0.25
Weight (g): 0.575
Meteorite Type: CM2 Chondrite


Macroscopic Description: Kathleen McBride
50% of the exterior surface is covered with black fusion crust.


Thin Section (,2) Description: Tim McCoy and Valerie Reynolds
The section consists of a few small chondrules (up to 0.5 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa1-50, orthopyroxene is Fs2. The matrix consists dominantly of an Fe-rich serpentine. The meteorite is a CM2 chondrite.



Thin Section Images

Cross-Polarized
Light LAP 04771
Plane-Polarized
Light LAP 04771
Reflected Light
LAP 04771
LAP 04771 - Cross-Polarized Light LAP 04771 - Plane-Polarized Light LAP 047 - Reflected Light



Lab Images

LAP 04771
Data from:
  MB92
  Table 3
  Line 299:
Mass (g):0.6
Class:CM2
Weathering grade:B
Fayalite (mol%):1-50
Ferrosilite (mol%):2
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 30(1) (2007), 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:
Photograph from unknown source 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)

Direct link to this page