header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 28 Sep 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:
Limit to approved meteorite names
Search text:  
LaPaz Icefield 04527
Basic information Name: LaPaz Icefield 04527
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 04527
Observed fall: No
Year found: 2004
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 2 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 30(2)  (2007)  CM2
Meteoritical Bulletin:  MB 94  (2008)  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 31 Aug 2007
Writeuphelp
Writeup from AMN 30(2):
Sample No.: LAP 04527; LAP 04588; LAP 04675; LAP 04680; LAP 04760; LAP 04796; LAP 04807
Location: LaPaz Ice Field
Field No.: 17697; 17473; 17629; 17644; 17619; 17186; 17028
Dimensions (cm):   1.5 x 1.5 x 0.75; 3.0 x 2.0 x 1.5; 2.5 x 2.0 x 1.5; 4.0 x 3.0 x 1.25;
1.0 x 1.0 x 1.0; 2.0 x 1.5 x 3.5; 15.695; 3.0 x 2.5 x 2.0
Weight (g): 1.964; 10.984; 6.573; 14.047; 1.119; 11.590
Meteorite Type:

CM2 Chondrite



Macroscopic Description: Kathleen McBride
The exteriors of these paired carbonaceous chondrites have varying amounts of fusion crust (40%-90%) and the colors range from purplish black to brown. The interiors are generally black with some oxidation, most have a powdery texture and contain chondrules of various colors. Varying degrees of oxidation exist in all these meteorites.

Thin Section (,2) Description: Tim McCoy, Lauren LaCroix and Linda Welzenbach
The meteorites are likely paired and a common description suffices. The sections consist of a few small chondrules (up to 1 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa1-61, orthopyroxene is Fs1-42. The meteorites are CM2 chondrites.



Thin Section Images

Reflected Light
LAP04527
Reflected Light
LAP04675
Reflected Light
LAP04680
Reflected Light
LAP04760
Reflected Light
LAP04807
LAP04527 - Reflected Light LAP04675 - Reflected Light LAP04680 - Reflected Light LAP04760 - Reflected Light LAP04807 - Reflected Light
Plane-Polarized Light
LAP04675
Cross Polarized Light
LAP04675
LAP04675 - Plane-Polarized Light LAP04675 - Cross Polarized Light



Lab Images

LAP 04527; LAP 04588; LAP 04675; LAP04680; LAP04760; LAP 04796; LAP04807

Data from:
  MB94
  Table 4
  Line 94:
Mass (g):1.964
Class:CM2
Weathering grade:B
Fayalite (mol%):1-60
Ferrosilite (mol%):1
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 30(2) (2007), JSC, Houston
Published in Meteoritical Bulletin, no. 94, MAPS 43, 1551-1588 (2008)
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 40129 approved meteorites from Antarctica (plus 4494 unapproved names)

Direct link to this page