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LaPaz Icefield 04721
Basic information Name: LaPaz Icefield 04721
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 04721
Observed fall: No
Year found: 2004
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 35 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 31(1)  (2008)  CR2
Meteoritical Bulletin:  MB 94  (2008)  CR2
Recommended:  CR2    [explanation]

This is 1 of 167 approved meteorites classified as CR2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), and CR chondrites
Comments: Approved 17 Feb 2008
Writeuphelp
Writeup from AMN 31(1):
Sample No.: LAP 04721
Location: LaPaz Ice Field
Field No.: 17621, 17613
Dimensions (cm):   5.0 x 2.8 x 2.2; 3.8 x 3.0 x 2.0
Weight (g): 58.847; 34.993
Meteorite Type:

CR2 Chondrite

Pairing:


Macroscopic Description: Cecilia Satterwhite
These carbonaceous chondrites have black, fractured fusion crust with oxidation haloes. The interiors are black with abundant inclusions and chondrules. Some weathering is visible.

 

Thin Section (,2) Description: McCoy, Linda Welzenbach and Cari Corrigan
The sections exhibit mm-sized, well-defined, metal-rich chondrules and CAI’s in a dark matrix of FeO-rich phyllosilicate. Weathering is locally extensive. Silicates are unequilibrated; olivines range from Fa1-68, with most Fa0-2, and pyroxenes from Fs1-3. The meteorites are CR2 chondrites.


Thin Section Images

Plane-Polarized
Light LAP 04721
Cross-Polarized
Light LAP 04721
LAP 04721 - Plane-Polarized
LAP 04721 - Cross-Polarized



Lab Images

North View
LAP 04721
LAP 04721 - North View

Data from:
  MB94
  Table 4
  Line 455:
Mass (g):35
Class:CR2
Weathering grade:B/C
Fayalite (mol%):1-68
Ferrosilite (mol%):1-2
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 31(1) (2008), JSC, Houston
Published in Meteoritical Bulletin, no. 94, MAPS 43, 1551-1588 (2008)
Find references in NASA ADS:
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Geography:

Antarctica
Coordinates:Unknown.

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

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