Meteoritical Bulletin: Entry for LaPaz Icefield 04771

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LaPaz Icefield 04771

Basic information

Name: LaPaz Icefield 04771
This is an OFFICIAL meteorite name.
Abbreviation: LAP 04771
Observed fall: No
Year found: 2004
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 0.6 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 30(1)	(2007)	CM2
Meteoritical Bulletin:	MB 92	(2007)	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 16 Feb 2007

Writeup

Writeup from AMN 30(1):

Sample No.:	LAP 04771
Location:	LaPaz Ice Field
Field No.:	17429
Dimensions (cm):	1.0x0.75x0.25
Weight (g):	0.575
Meteorite Type:	CM2 Chondrite

Macroscopic Description: Kathleen McBride
50% of the exterior surface is covered with black fusion crust.

Thin Section (,2) Description: Tim McCoy and Valerie Reynolds
The section consists 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_1-50, orthopyroxene is Fs₂. The matrix consists dominantly of an Fe-rich serpentine. The meteorite is a CM2 chondrite.

Thin Section Images

Cross-Polarized Light LAP 04771	Plane-Polarized Light LAP 04771	Reflected Light LAP 04771

Lab Images

Data from:
  MB92
  Table 3
  Line 299:

Mass (g):	0.6
Class:	CM2
Weathering grade:	B
Fayalite (mol%):	1-50
Ferrosilite (mol%):	2

Catalogs:

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

References:

Published in Antarctic Meteorite Newsletter 30(1) (2007), JSC, Houston
Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)

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Photos:

Credit	Photos
Photographs from AMN:
Photograph from unknown source	A photo is in the write-up above

Geography:

Antarctica

Coordinates:

Unknown.

Statistics:
This is 1 of 44547 approved meteorites from Antarctica (plus 3802 unapproved names)

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Revision
history:

This lists important revisions made to data for this record.

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