Meteoritical Bulletin: Entry for LaPaz Icefield 04527

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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: 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 636 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

Writeup

help

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 Fa_1-61, orthopyroxene is Fs_1-42. The meteorites are CM2 chondrites.

Thin Section Images

Reflected Light LAP04527	Reflected Light LAP04675	Reflected Light LAP04680	Reflected Light LAP04760	Reflected Light LAP04807

Plane-Polarized Light LAP04675	Cross Polarized Light LAP04675

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)

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Photos:

Credit	Photos
Photographs from AMN:
JSC	A photo is in the write-up above

Geography:

Antarctica

Antarctica

Coordinates:

Unknown.

Statistics:
This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names)

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Revision
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