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Larkman Nunatak 06512
Basic information Name: Larkman Nunatak 06512
     This is an OFFICIAL meteorite name.
Abbreviation: LAR 06512
Observed fall: No
Year found: 2006
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 29 g
Antarctic Meteorite Newsletter:  AMN 32(2)  (2009)  Mesosiderite
Meteoritical Bulletin:  MB 98  (2010)  Mesosiderite
Recommended:  Mesosiderite    [explanation]

This is 1 of 233 approved meteorites classified as Mesosiderite.   [show all]
Search for other: Mesosiderites, Metal-rich meteorites
Comments: Approved 4 Sep 2009
Writeup from AMN 32(2):
Sample Number LAR 06512
Newsletter 32,2
Location Larkman Nunatak
Field Number 19283
Dimensions 2.5 x 3.0 x 2.25
Weight 29.01
Original Classification Mesosiderite
Macroscopic Description - Kathleen McBride
Some brown/black fusion crust is on the exterior. The interior is a light gray matrix with a little metal and minor rust. Inclusions are dark gray to white in color.
Thin Section (,2) Description - Cari Corrigan, Tim McCoy and Linda Welzenbach
This section consists of angular and basaltic fragments and individual grains of pyroxene, plagioclase, rare olivine, metal and sulfide set in a clastic matrix. Individual grains range up to 6 mm in size. Particularly prominent are sulfide-rich clasts that appear to have impact-melted textures. Pyroxene is exsolved, with compositions of Fs22-58 Wo1-43 and has Fe/Mn ratios of ~30. Olivine is Fa31. Plagioclase is An92Or1. The somewhat higher than normal abundance of metal and sulfide suggest that this could be a separated silicate clast from a mesosiderite.
Antarctic Meteorite Images for Sample LAR 06512
LAR 06512 Meteorite Sample Photograph Showing North View  LAR 06512 Meteorite Thin Section Photo with 2.5x magnification in Plane-Polarized Light  LAR 06512 Meteorite Thin Section Photo with 2.5x magnification in Cross-Polarized Light  LAR 06512 Meteorite Thin Section Photo with 5x magnification in Plane-Polarized Light 
LAR 06512 Meteorite Thin Section Photo with 5x magnification in Cross-Polarized Light 
Data from:
  Table 2
  Line 134:
Mass (g):29.0
Weathering grade:A/B
Fayalite (mol%):31
Ferrosilite (mol%):22-58
Type spec location:JSC, SI
Main mass:JSC
Comments:Fracturing A/B
   and collections
JSC: Mailcode XI, 2101 NASA Parkway, NASA Johnson Space Center, Houston, TX 77058, United States; Website (institutional address; updated 28 Jul 2022)
SI: Department of Mineral Sciences, NHB-119, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, United States; Website (institutional address; updated 16 Jan 2012)
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 32(2) (2009), JSC, Houston
Published in Meteoritical Bulletin, no. 98, MAPS 45, 1530-1551 (2010)
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     This is 1 of 43352 approved meteorites from Antarctica (plus 3802 unapproved names)

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