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LaPaz Icefield 031275
Basic information Name: LaPaz Icefield 031275
     This is an OFFICIAL meteorite name.
Abbreviation: LAP 031275
Observed fall: No
Year found: 2003
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 6.1 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 29(2)  (2006)  R
Meteoritical Bulletin:  MB 92  (2007)  R
Antarctic Meteorite Newsletter:  AMN 31(1)  (2008)  R5
Recommended:  R5    [explanation]

This is 1 of 35 approved meteorites classified as R5.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 4-7)
Comments: Approved 1 Sep 2006
Writeuphelp
Writeup from AMN 29(2):
Sample No.: LAP 031275
Location: LaPaz Ice Field
Field No.: 16190
Dimensions (cm):   2.75x1.25x1.25
Weight (g): 6.148
Meteorite Type: R Chondrite


Macroscopic Description: Kathleen McBride
Brown/black fusion crust with oxidation halos covers 100% of this meteorite’s exterior surface. The interior has a gray matrix with rust and small black inclusions.


Thin Section (,2) Description: Tim McCoy
The section consist of rare, well-defined, chondrules (up to 1 mm) set in a recrystallized matrix of silicates and sulfides (both troilite and pentlandite). Olivines are nearly homogeneous (Fa38-42, with a small tail of analyses down to Fa17) and a singe pyroxene is Fs24. The meteorite is an R chondrite of type 5.



Thin Section Images

Cross-Polarized LightPlane-Polarized Light
LAP 031275 - Cross-Polarized Light LAP 031275 - Plane-Polarized Light



Lab Images

LAP 031321 Image North

Data from:
  MB92
  Table 3
  Line 419:
Mass (g):6.1
Class:R
Weathering grade:B/C
Fayalite (mol%):17-42
Ferrosilite (mol%):24
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 29(2) (2006), JSC, Houston
Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photographs from AMN:
JSC A photo is in the write-up above
Geography:

Antarctica
Coordinates:Unknown.

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)

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