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Larkman Nunatak 06636
Basic information Name: Larkman Nunatak 06636
     This is an OFFICIAL meteorite name.
Abbreviation: LAR 06636
Observed fall: No
Year found: 2006
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 6.3 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 32(2)  (2009)  CK6
Meteoritical Bulletin:  MB 98  (2010)  L5-impact melt
Recommended:  CK6    [explanation]

This is 1 of 85 approved meteorites classified as CK6.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 4 Sep 2009
Writeuphelp
Writeup from AMN 32(2):
Sample Number LAR 06636
Pairing
Newsletter 32,2
Location Larkman Nunatak
Field Number 19354
Dimensions 2.5 x 1.75 x 1.0
Weight 6.25
Original Classification CK6 Chondrite
Macroscopic Description - Kathleen McBride
The exterior is a weathered dull black with chocolate brown patches of fusion crust. The interior is a gray matrix with rust and evaporites. It has a soft texture with low or no metal.
Thin Section (,4) Description - Cari Corrigan, Tim McCoy and Linda Welzenbach
The section consists of a coarse-grained mixture of olivine, pyroxene, plagioclase, magnetite and sulfides. Rare relict chondrules are observed and the section is cross-cut by veins and networks of shock-melt that includes micron-sized silicates, magnetite and sulfides. Mafic silicates are homogeneous. Olivine is Fa34 and augite is Fs10Wo48. Plagioclase is variable (An62-89). The meteorite is a shock-veined CK6 chondrite.
Oxygen Isotopic Analysis - Doug Rumble
The oxygen isotopic composition of a magnetic, whole-rock fraction is δ17O = -5.684, -5.789, δ18O = -2.171, -2.348, Δ17O = -4.54, -4.55, within the range of CK chondrites.
Antarctic Meteorite Images for Sample LAR 06636
LAR 06636 Meteorite Sample Photograph   LAR 06636 Meteorite Sample Photograph Showing North View  LAR 06636 Meteorite Sample Photograph   LAR 06636 Meteorite Sample Photograph Showing Chips 
LAR 06636 Meteorite Sample Photograph Showing Interior View  LAR 06636 Meteorite Sample Photograph Showing Interior View  LAR 06636 Meteorite Sample Photograph   LAR 06636 Meteorite Sample Photograph  
LAR 06636 Meteorite Thin Section Photo with 2.5x magnification in Plane-Polarized Light  LAR 06636 Meteorite Thin Section Photo with 2.5x magnification in Cross-Polarized Light  LAR 06636 Meteorite Thin Section Photo with 5x magnification in Plane-Polarized Light  LAR 06636 Meteorite Thin Section Photo with 5x magnification in Cross-Polarized Light 
Data from:
  MB98
  Table 2
  Line 168:
Mass (g):6.3
Class:L5-impact melt
Weathering grade:CE
Fayalite (mol%):34
Ferrosilite (mol%):10
Classifier:SI
Type spec location:JSC, SI
Main mass:JSC
Comments:Fracturing C
Plots: O isotopes:  
Institutions
   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)
Catalogs:
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)
Find references in NASA ADS:
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Geography:

Antarctica
Coordinates:Unknown.

Statistics:
     This is 1 of 45260 approved meteorites from Antarctica (plus 3472 unapproved names)

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