Meteoritical Bulletin: Entry for LaPaz Icefield 03788

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LaPaz Icefield 03788

Basic information

Name: LaPaz Icefield 03788
This is an OFFICIAL meteorite name.
Abbreviation: LAP 03788
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 8.3 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 29(1)	(2006)	L-imp melt
Meteoritical Bulletin:	MB 91	(2007)	L-imp melt
Recommended:			L-imp melt [explanation]

This is 1 of 31 approved meteorites classified as L-imp melt. [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 21 Feb 2005

Writeup

Writeup from AMN 29(1):

Sample No.:	LAP 03788
Location:	LaPaz Ice Field
Field No.:	16282
Dimensions (cm):	4.0x4.0x2.25
Weight (g):	8.255
Meteorite Type:	L Chondrite (Impact Melt)

Macroscopic Description: Kathleen McBride
60% of the exterior of this meteorite has dull black fusion crust with polygonal fractures. The interior is a gray matrix with light gray chondrules and dark gray angular inclusions. Evaporite deposits are seen near the fusion crust. Some rust is present.

Thin Section (,2) Description: Tim McCoy and Linda Welzenbach
The meteorite exhibits a relatively coarse (50-100 micron grain size), equigranular silicate matrix including rounded to irregular, sulfide-free metal blebs reaching 0.5 mm and vesicles reaching 0.5 mm. Mafic silicate compositions (Fa₂₃ , Fs₁₉ ) indicate L chondrite parentage and texture suggests it is an impact melt.

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

Data from:
  MB91
  Table 4
  Line 284:

Mass (g):	8.3
Class:	L (IM)
Weathering grade:	A/BE
Fayalite (mol%):	23
Ferrosilite (mol%):	19

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:
Find references in Google Scholar:

Photos:

Credit	Photos
Photographs from AMN:
Photograph from unknown source	A photo is in the write-up above
Photos from the Encyclopedia of Meteorites:
unknown

Geography:

Antarctica

Coordinates:

Unknown.

Statistics:
This is 1 of 44048 approved meteorites from Antarctica (plus 3802 unapproved names)

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