Meteoritical Bulletin: Entry for LaPaz Icefield 02336

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LaPaz Icefield 02336

Basic information

Name: LaPaz Icefield 02336
This is an OFFICIAL meteorite name.
Abbreviation: LAP 02336
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 85.6 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 27(3)	(2004)	CM2
Meteoritical Bulletin:	MB 89	(2005)	CM2
MetBase:	v. 7.1	(2006)	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

Writeup

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Writeup from AMN 27(3):

Sample No.:	LAP 02336; LAP 02349
Location:	LaPaz Ice Field
Field No.:	15528; 15519
Dimensions (cm):	5.0x4.0x3.0 3.0x3.0x2.25
Weight (g):	85.563; 26.005
Meteorite Type:	CM2 Chondrite

LAP02336

LAP02349

Macroscopic Description: Kathleen McBride
The exterior of 336 has a dull, brown-black fusion crust with polygonal fractures. A few areas have a shiny, frothy appearance. 349's exterior has a thick purplish patch of fusion crust. The interiors of both are dull, black, soft and friable with white, cream and tan colored chondrules. Both have an oxidation rind.

Thin Section (,2) Description: Tim McCoy, Cari Corrigan
The sections consist of a few small chondrules (up to 0.5 mm), mineral grains and CAIs set in a black matrix; rare sulfide grains are present. Olivine compositions are Fa_0-45, with a peak at Fa_0-2. The matrix consists dominantly of an Fe-rich serpentine; chondrules are moderately altered. The meteorites are CM2 chondrites.


LAP 02336 Cross-Polarized Light	LAP 02336 Plane-Polarized Light	LAP 02349 Cross-Polarized Light	LAP 02349 Plane-Polarized Light

Data from:
  MB89
  Table A1
  Line 135:

Mass (g):	85.56
Class:	CM2
Weathering grade:	B
Fayalite (mol%):	0-42

Catalogs:

Search for this meteorite in the NASA/JSC database (U.S.):

References:

Published in Antarctic Meteorite Newsletter 27(3) (2004), JSC, Houston
Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)

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Photos:

Credit	Photos
Photographs from AMN:
Photograph from unknown source	A photo is in the write-up above
Photos from the Encyclopedia of Meteorites:
Dr Carlton Allen, JSC-KT, NASA

Geography:

Antarctica

Antarctica

Coordinates:
Recommended::	(86° 22'S, 70° 0'W)

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

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