Meteoritical Bulletin: Entry for LaPaz Icefield 031323

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LaPaz Icefield 031323

Basic information

Name: LaPaz Icefield 031323
This is an OFFICIAL meteorite name.
Abbreviation: LAP 031323
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 3.1 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 29(1)	(2006)	Acapulcoite
Meteoritical Bulletin:	MB 91	(2007)	Acapulcoite
Recommended:			Acapulcoite [explanation]

This is 1 of 91 approved meteorites classified as Acapulcoite. [show all]
Search for other: Acapulcoite-lodranite family, Acapulcoites, and Primitive achondrites

Comments:

Approved 21 Feb 2006

Writeup

Writeup from AMN 29(1):

Sample No.:	LAP 031323
Location:	LaPaz Ice Field
Field No.:	16647
Dimensions (cm):	1.5x1.5x1.0
Weight (g):	3.125
Meteorite Type:	Acapulcoite

Macroscopic Description: Kathleen McBride
50% of the exterior has brown/black fusion crust. The rusty, granular textured interior has a high metal content. Thin Section (,2) Description: Tim McCoy and Linda Welzenbach
The section consists of an equigranular mixture of olivine (Fa₁₃), orthopyroxene (Fs₁₂Wo₂), clinopyroxene (Fs₅Wo₄₃), plagioclase (An₁₅Or₄), metal and troilite. Mafic grain sizes are ~100 microns, triple junctions are common and plagioclase is interstitial to and includes mafic silicates. The rock is an acapulcoite, but similar in texture to the intermediate members of the acapulcoite-lodranite clan EET 84302 and GRA 95209.

Cross-Polarized Light	Plane-Polarized Light	Cross-Polarized Light	Plane-Polarized Light

Data from:
  MB91
  Table 4
  Line 659:

Mass (g):	3.1
Class:	Acap
Weathering grade:	C
Fayalite (mol%):	13
Ferrosilite (mol%):	12

Catalogs:

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

References:

Published in Antarctic Meteorite Newsletter 29(1) (2006), JSC, Houston
Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)

Find references in NASA ADS:
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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 44048 approved meteorites from Antarctica (plus 3802 unapproved names)

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