Meteoritical Bulletin: Entry for LaPaz Icefield 03786

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LaPaz Icefield 03786

Basic information

Name: LaPaz Icefield 03786
This is an OFFICIAL meteorite name.
Abbreviation: LAP 03786
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 22.4 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 29(2)	(2006)	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 1 Sep 2006

Writeup

help

Writeup from AMN 29(2):

Sample No.:	LAP 03786; LAP 031371
Location:	LaPaz Ice Field
Field No.:	16835; 16954
Dimensions (cm):	4.75x2.0x2.0; 3.0x2.0x1.25
Weight (g):	22.395; 8.813
Meteorite Type:	CM2 Chondrite

Macroscopic Description: Kathleen McBride
The exterior has purple black fusion crust with polygonal fractures. The interior is black and powdery with light <1 mm sized chondrules/inclusions.

Thin Section (,2) Description: Tim McCoy and Emma Bullock
The sections consist of moderately abundant small chondrules (up to 0.5 mm), mineral grains and CAIs set in a black matrix; metal and sulfide grains are present. Olivine compositions are Fa_1-40, orthopyroxene is Fs_1-30. The matrix consists pre-dominantly of an Fe-rich serpentine. The meteorites are CM2 chondrites.

Thin Section Images

Cross-Polarized Light LAP 03786	Plane-Polarized Light LAP 03786	Reflected Light LAP 03786

Cross-Polarized Light LAP 031371	Plane-Polarized Light LAP 031371	Reflected Light LAP 031371
LAP 031371 - Cross-Polarized Light">	LAP 031371 - Plane-Polarized Light">	LAP 031371 - Reflected Light">

Lab Images

LAP 03786,0 ,1, ,3 Image Interior

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LAP 031371,0 ,1 Image Interior" border="0">

Data from:
  MB92
  Table 3
  Line 263:

Mass (g):	22.4
Class:	CM2
Weathering grade:	A/B
Fayalite (mol%):	1-40
Ferrosilite (mol%):	6

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)

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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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