Meteoritical Bulletin: Entry for LaPaz Icefield 04779

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LaPaz Icefield 04779

Basic information

Name: LaPaz Icefield 04779
This is an OFFICIAL meteorite name.
Abbreviation: LAP 04779
Observed fall: No
Year found: 2004
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 1.8 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 30(1)	(2007)	Ureilite
Meteoritical Bulletin:	MB 92	(2007)	Ureilite
Recommended:			Ureilite [explanation]

This is 1 of 660 approved meteorites classified as Ureilite. [show all]
Search for other: Achondrites, Ureilites

Comments:

Approved 16 Feb 2007

Writeup

Writeup from AMN 30(1):

Sample No.:	LAP 04779
Location:	LaPaz Ice Field
Field No.:	17823
Dimensions (cm):	1.0x1.0x1.0
Weight (g):	1.849
Meteorite Type:	Ureilite

Macroscopic Description: Kathleen McBride
40% of the exterior surface has brown/black fusion crust. The soft interior is rusty black and very weathered.

Thin Section (,2) Description: Tim McCoy and Valerie Reynolds
The section consists of an aggregate of large olivine and pyroxene grains up to 2 mm across. Individual olivine grains are rimmed by carbon-rich material containing traces of metal. Olivine has cores of Fa₂₂, with rims reduced to Fa₄. The meteorite is a ureilite.

Thin Section Images

Cross-Polarized Light LAP 04779	Plane-Polarized Light LAP 04779

Lab Images

Data from:
  MB92
  Table 3
  Line 307:

Mass (g):	1.8
Class:	Ure
Weathering grade:	C
Fayalite (mol%):	4-22

Catalogs:

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

References:

Published in Antarctic Meteorite Newsletter 30(1) (2007), JSC, Houston
Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)

Find references in NASA ADS:
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Photos:

Credit	Photos
Photographs from AMN:
JSC	A photo is in the write-up above

Geography:

Antarctica

Coordinates:

Unknown.

Statistics:
This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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