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LaPaz Icefield 03645
Basic information Name: LaPaz Icefield 03645
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 03645
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 127.6 g
Antarctic Meteorite Newsletter:  AMN 28(1)  (2005)  R
Meteoritical Bulletin:  MB 89  (2005)  R
MetBase:  v. 7.1  (2006)  R
Recommended:  R    [explanation]

This is 1 of 3 approved meteorites classified as R.   [show all]
Search for other: Rumuruti chondrites
Writeup from AMN 28(1):
Sample No.: LAP 03645
Location: LaPaz Ice Field
Field No.: 16023
Dimensions (cm):   7.5x3.0x2.5
Weight (g): 127.562
Meteorite Type: R Chondrite
LAP03645 LAP03645

Macroscopic Description: Kathleen McBride
Black fusion crust with polygonal fractures covers 60% of the exterior. The interior has a medium gray matrix with black and gray inclusions. This meteorite has a high metal content with rust and an oxidation rind.

Thin Section (,2) Description: Linda Welzenbach, Tim McCoy

LAP 03645 - Cross-Polarized Light LAP 03645 - Plane-Polarized Light
Cross-Polarized Light Plane-Polarized Light
This meteorite is similar to and almost certainly paired with LAP 02238, the original description of which is given below:
The section consists of relatively few chondrules (up to 1 mm) and chondrule fragments in a fine-grained brecciated matrix, with very abundant iron sulfide and pentlandite and lesser abundances of oxides and graphite. Mineral compositions are olivine of Fa27-46 (most Fa38-40), orthopyroxene of Fs18-36Wo1-3 and augite Fs9-15Wo44-48. The olivine composition is similar to R chondrites, although graphite has not been previously reported in this group.

Data from:
  Table A1
  Line 244:
Origin or pseudonym:Pinnacle Vista Estates
Mass (g):127.56
Weathering grade:B
Fayalite (mol%):7-43
Comments:02238 pairing group
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 28(1) (2005), JSC, Houston
Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)
Find references in NASA ADS:
Find references in Google Scholar:
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         


     This is 1 of 43352 approved meteorites from Antarctica (plus 3802 unapproved names)

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