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Larkman Nunatak 12034
Basic information Name: Larkman Nunatak 12034
     This is an OFFICIAL meteorite name.
Abbreviation: LAR 12034
Observed fall: No
Year found: 2012
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 931 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 38(2)  (2015)  LL3.8
Meteoritical Bulletin:  MB 104  (2015)  LL3.8
Recommended:  LL3.8    [explanation]

This is 1 of 33 approved meteorites classified as LL3.8.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 28 Aug 2015
Writeuphelp
Writeup from AMN 38(2):
Sample Number LAR 12034
Newsletter 38,2
Location Larkman Nunatak
Field Number 23905
Dimensions 14.2 x 9.0 x 4.0
Weight 930.60
Original Classification LL3.8 Chondrite
Mineral Composition (%Fa &  %Fs)
Fayalite (mol%): 25-34; Ferrosilite (mol%): 12-24
Macroscopic Description - Mitchell Haller
The exterior has 90% black/brown fusion crust with weathered pits and 2-3 large fractures penetrating the surface. The interior is a gray matrix with white, gray, tan and weathered clasts. A large white clast is visible on the broken edge.
Thin Section Description (,2) - Cari Corrigan, Tim McCoy
The section exhibits numerous well-defined chondrules (up to 2 mm) in a matrix of fine-grained silicates, metal and troilite. Polysynthetically twinned pyroxene is abundant. The meteorite is modestly stained with hydrated iron oxides of terrestrial origin. Silicates are unequilibrated; olivines range from Fa25-34 and pyroxene is Fs12-24. The meteorite is an LL3 chondrite (estimated subtype 3.8).
Antarctic Meteorite Images for Sample LAR 12034
Lab Photo of Sample LAR 12034 Displaying Bottom Orientation  Lab Photo of Sample LAR 12034 Displaying East Orientation  Lab Photo of Sample LAR 12034 Displaying North Orientation  Lab Photo of Sample LAR 12034 Displaying Splits East Orientation 
Lab Photo of Sample LAR 12034 Displaying South Orientation  Lab Photo of Sample LAR 12034 Displaying Top Orientation  Lab Photo of Sample LAR 12034 Displaying West Orientation  Lab Photo of Sample LAR 12034  
Thin Section Photo of Sample LAR 12034 in Plane-Polarized Light with 2.5X Magnification  Thin Section Photo of Sample LAR 12034 in Reflected Light with 2.5X Magnification  Thin Section Photo of Sample LAR 12034 in Cross-Polarized Light with 2.5X Magnification  Thin Section Photo of Sample LAR 12034 in Plane-Polarized Light with 5X Magnification 
Thin Section Photo of Sample LAR 12034 in Reflected Light with 5X Magnification  Thin Section Photo of Sample LAR 12034 in Cross-Polarized Light with 5X Magnification 
Data from:
  MB104
  Table 0
  Line 0:
Date:2012
Mass (g):930.6
Pieces:1
Class:LL3.8
Weathering grade:A/B
Fayalite (mol%):25-34
Ferrosilite (mol%):12-24
Classifier:SI
Type spec mass (g):930.6
Type spec location:JSC
Main mass:JSC
Finder:ANSMET
Comments:Submitted by AMN
Institutions
   and collections
JSC: Mailcode KT, 2101 NASA Parkway, NASA Johnson Space Center, Houston, TX 77058, United States; Website (institutional address; updated 3 Sep 2013)
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)
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 38(2) (2015), JSC, Houston
Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Geography:

Antarctica
Coordinates:Unknown.

Statistics:
     This is 1 of 39175 approved meteorites from Antarctica (plus 5051 unapproved names)

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