Meteoritical Bulletin: Entry for LaPaz Icefield 02240

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LaPaz Icefield 02240

Basic information

Name: LaPaz Icefield 02240
This is an OFFICIAL meteorite name.
Abbreviation: LAP 02240
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 28.2 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 27(3)	(2004)	H-imp melt
Meteoritical Bulletin:	MB 89	(2005)	H-imp melt
MetBase:	v. 7.1	(2006)	H-imp melt
Recommended:			H-imp melt [explanation]

This is 1 of 13 approved meteorites classified as H-imp melt. [show all]
Search for other: H chondrites, H chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)

Writeup

Writeup from AMN 27(3):

Sample No.:	LAP 02240
Location:	LaPaz Ice Field
Field No.:	15167
Dimensions (cm):	3.9x2.5x2.5
Weight (g):	28.163
Meteorite Type:	H Chondrite (Impact Melt)

Macroscopic Description: Cecilia Satterwhite
The exterior of this meteorite is brown. The interior revealed a brown matrix with no obvious features.

Thin Section (,2) Description: Tim McCoy, Cari Corrigan
The section consists dominantly of a fine-grained melt-textured matrix of olivine and pyroxene (1-10 microns) with irregular blebs of metal with rimming sulfide and fragments of mineral grains (200-300 micron grain size.) The mineral compositions are homogenous; olivine is Fa₁₈ and orthopyroxene is Fs₁₆. The meteorite is an impact melt of an H chondrite precursor.


LAP 02240 Cross-Polarized Light	LAP 02240 Plane-Polarized Light	LAP 02240 Reflected Light

Data from:
  MB89
  Table A1
  Line 50:

Mass (g):	28.16
Class:	H-imp
Weathering grade:	C
Fayalite (mol%):	18
Ferrosilite (mol%):	16

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

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

Statistics:
This is 1 of 43700 approved meteorites from Antarctica (plus 3802 unapproved names)

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