Meteoritical Bulletin: Entry for LaPaz Icefield 02231

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LaPaz Icefield 02231

Basic information

Name: LaPaz Icefield 02231
This is an OFFICIAL meteorite name.
Abbreviation: LAP 02231
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 257 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 27(1)	(2004)	H5
Meteoritical Bulletin:	MB 88	(2004)	H5
MetBase:	v. 7.1	(2006)	H5
Recommended:			H5 [explanation]

This is 1 of 11568 approved meteorites (plus 23 unapproved names) classified as H5. [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Writeup

Writeup from AMN 27(1):

Sample No.:	LAP 02231
Location:	LaPaz Icefield
Field No.:	15171
Dimensions (cm):	6.0x5.0x4.8
Weight (g):	256.7
Meteorite Type:	H5 Chondrite

Macroscopic Description: Cecilia Satterwhite
The exterior is black/brown. The interior reveals a gray/black matrix with lots of rusty areas. Some gray clasts are visible.

Thin Section (,2) Description: Tim McCoy, Linda Welzenbach
The section consists of a large (1 cm) wide shock vein dominated by fine-grained (2-50 micron grain size) olivine and pyroxene with elongated metal and sulfides cross cutting a chondritic host with chondrules reaching 1 mm. The mineral compositions are homogenous; olivine is Fa₁₇ and orthopyroxene is Fs₁₆. The meteorite is a shock-veined H5 chondrite. The section examined may not be a good representative of the mass as whole. It may be paired with LAP 02237.


Cross-Polarized Light	Plane-Polarized Light	Reflected Light

Data from:
  MB88
  Table A1
  Line 20:

Mass (g):	256.7
Class:	H5
Weathering grade:	B
Fayalite (mol%):	17
Ferrosilite (mol%):	16

Catalogs:

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

References:

Published in Antarctic Meteorite Newsletter 27(1) (2004), JSC, Houston
Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)

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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

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

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

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Revision
history:

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