Meteoritical Bulletin: Entry for LaPaz Icefield 02225

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LaPaz Icefield 02225

Basic information

Name: LaPaz Icefield 02225
This is an OFFICIAL meteorite name.
Abbreviation: LAP 02225
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 260 g

Classification
history:

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

This is 1 of 6 approved meteorites classified as EH-imp melt. [show all]
Search for other: EH chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), Enstatite-rich meteorites, and Melted chondrites

Comments:

Revised 28 Oct 2019: Corrected mass, per JSC

Writeup

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Writeup from AMN 27(1):

Sample No.:	LAP 02225
Location:	LaPaz Icefield
Field No.:	15434
Dimensions (cm):	7.0x7.0x3.5
Weight (g):	313.50
Meteorite Type:	Enstatite (EH) Chondrite (Impact Melt)

LAP02225

Macroscopic Description: Kathleen McBride
Brown/black obvious fusion crust with oxidation haloes covers 75% of the exterior surface. The interior is composed of gray crystalline material with rusting and evaporites along fractures. This meteorite is hard.

Thin Section (,2) Description: Linda Welzenbach, Tim McCoy
The section consists of a matrix of small (~0.2 mm) pyroxene laths with interstitial plagioclase, metal, troilite, daubreelite, Mg,Mn,Fe-sulfides, and perryite. The latter is often exsolved on the {111} axes of the metal. Also present are ~10 vol.% large enstatite laths that can exceed 3 mm in long dimension. Enstatite is Fs_0-1; plagioclase is An₀Or_2-3 and metal contains 3 wt.% Si. The meteorite is an enstatite chondrite impact melt, probably of EH parentage.


Cross-Polarized Light	Plane-Polarized Light	Reflected Light

Data from:
  MB88
  Table A1
  Line 15:

Mass (g):	313.5
Class:	EH im
Weathering grade:	B
Ferrosilite (mol%):	0-1

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)

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
Photos from the Encyclopedia of Meteorites:
Dr Carlton Allen, JSC-KT, NASA

Geography:

Antarctica

Antarctica

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

Statistics:
This is 1 of 44248 approved meteorites from Antarctica (plus 3802 unapproved names)

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