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Larkman Nunatak 12265
Basic information Name: Larkman Nunatak 12265
     This is an OFFICIAL meteorite name.
Abbreviation: LAR 12265
Observed fall: No
Year found: 2012
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 14.3 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 38(1)  (2015)  CK5
Meteoritical Bulletin:  MB 104  (2015)  CK5
Recommended:  CK5    [explanation]

This is 1 of 162 approved meteorites classified as CK5.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites
Comments: Approved 12 Feb 2015
Writeuphelp
Writeup from AMN 38(1):
Sample Number LAR 12265
Newsletter 38,1
Location Larkman Nuntak
Field Number 23757
Dimensions 2.8 x 2.5 x 1.0
Weight 14.26
Original Classification CK5 Chondrite
Mineral Composition (%Fa &  %Fs)
Fayalite (mol%): 34
Weathering
B/C
Fracturing
B
Macroscopic Description - Mitchell Haller
55% of the exterior has black fusion crust with a porous texture on top. Areas without fusion crust are a dark gray color. The interior is a dark gray matrix with heavy oxidation in some areas.
Thin Section Description (,2) - Cari Corrigan and Tim McCoy
The section consists of large (up to 1.5 mm), poorly-defined chondrules in a matrix of finer-grained silicates, sulfides and abundant magnetite grains. The meteorite is only slightly weathered, but is extensively shock blackened. Silicates are homogeneous. Olivine is Fa34 and pyroxene is Fs11Wo48. The meteorite is a CK5 chondrite.
Antarctic Meteorite Images for Sample LAR 12265
Lab Photo of Sample LAR 12265 Displaying Sample Splits View  Lab Group Photo of Sample LAR 12265 Displaying North Orientation  Thin Section Photo of Sample LAR 12265 in Plane-Polarized Light with 1.25X Magnification  Thin Section Photo of Sample LAR 12265 in Reflected Light with 1.25X Magnification 
Thin Section Photo of Sample LAR 12265 in Cross-Polarized Light with 1.25X Magnification  Thin Section Photo of Sample LAR 12265 in Plane-Polarized Light with 2.5X Magnification  Thin Section Photo of Sample LAR 12265 in Reflected Light with 2.5X Magnification  Thin Section Photo of Sample LAR 12265 in Cross-Polarized Light with 2.5X Magnification 
Data from:
  MB104
  Table 0
  Line 0:
Date:2012
Mass (g):14.3
Pieces:1
Class:CK5
Weathering grade:B/C
Fayalite (mol%):34
Classifier:SI
Type spec mass (g):14.3
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(1) (2015), JSC, Houston
Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Antarctica
Coordinates:Unknown.

Statistics:
     This is 1 of 40129 approved meteorites from Antarctica (plus 4494 unapproved names)

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