Meteoritical Bulletin: Entry for LaPaz Icefield 031043

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LaPaz Icefield 031043

Basic information

Name: LaPaz Icefield 031043
This is an OFFICIAL meteorite name.
Abbreviation: LAP 031043
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 8.1 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 29(2)	(2006)	CM2
Meteoritical Bulletin:	MB 92	(2007)	CM2
Recommended:			CM2 [explanation]

This is 1 of 622 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

Writeup

help

Writeup from AMN 29(2):

Sample No.:	LAP 031043; LAP 031165; LAP 031195; LAP 031268; LAP 031299
Location:	LaPaz Ice Field
Field No.:	16435; 16670; 16682; 16813; 16980
Dimensions (cm):	3.0x2.5x1.0; 4.0x3.0x3.0; 1.25x1.25x0.25; 3.0x2.5x2.0; 2.5x1.75x1.25
Weight (g):	8.121; 27.000; 0.625; 15.407; 6.927
Meteorite Type:	CM2 Chondrite

Macroscopic Description: Kathleen McBride
Black polygonally fractured fusion crust is on the exterior of these meteorites. The interior of these carbonaceous chondrites is a black powdery matrix with light gray and white chondrules and inclusions.

Thin Section (,2) Description: Tim McCoy
The sections consist 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 Fa_1-48; rare orthopyroxenes are Fs_1-38. The matrix consists pre-dominantly of an Fe-rich serpentine. The meteorites are CM2 chondrites.

Thin Section Images

Cross-Polarized Light LAP 031043	Plane-Polarized Light LAP 031043	Reflected Light LAP 031043

Cross-Polarized Light LAP 031165	Plane-Polarized Light LAP 031165	Cross-Polarized Light LAP 031195	Plane-Polarized Light LAP 031195
LAP 031165 - Cross-Polarized Light">	LAP 031165 - Plane-Polarized Light">

Cross-Polarized Light LAP 031268	Plane-Polarized Light LAP 031268	Cross-Polarized Light LAP 031299	Plane-Polarized Light LAP 031299
LAP 031268 - Cross-Polarized Light">	LAP 031268 - Plane-Polarized Light">	LAP 031299 - Cross-Polarized Light">	LAP 031299 - Plane-Polarized Light">

Lab Images

LAP 031043,0 ,1 Image

LAP 0311043 Image North

LAP 031165,0 ,1 Image Interior

LAP 031195 Image North

LAP 031268,0 ,1 ,3 Image North

LAP 031299,0 ,1 Image

Data from:
  MB92
  Table 3
  Line 323:

Mass (g):	8.1
Class:	CM2
Weathering grade:	A/B
Fayalite (mol%):	1-48

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:
Find references in Google Scholar:

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 43856 approved meteorites from Antarctica (plus 3802 unapproved names)

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