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Dominion Range 10344
Basic information Name: Dominion Range 10344
     This is an OFFICIAL meteorite name.
Abbreviation: DOM 10344
Observed fall: No
Year found: 2010
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 68.4 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 37(1)  (2014)  CR2
AMN 37(2)  (2014)  LL3.4
Meteoritical Bulletin:  MB 103  (2014)  CR2
Recommended:  LL3.4    [explanation]

This is 1 of 24 approved meteorites classified as LL3.4.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 23 Feb 2014
Revised 5 Oct 2014: Classification updated in AMN 35(2)
Writeuphelp
Writeup from AMN 37(1):
Sample Number DOM 10344
Newsletter 37,1
Location Dominion Range
Field Number 21109
Dimensions 4.5 x 3.3 x 2.8
Weight 68.36
Original Classification CR2 chondrite
Pairing DOM 10077, DOM 10344, DOM 10467
Mineral Composition (%Fa &  %Fs)
Fayalite (mol%): 3-33; Ferrosilite (mol%): 3-13
Macroscopic Description - Kathleen McBride and Cecilia Satterwhite
These carbonaceous chondrites have brown/black fusion crust with oxidation haloes and rusty areas. The dark gray/black interior has abundant chondrules/inclusions of various sizes and color. Some metal is present.
Thin Section Description (,2) - Linda Welzenbach, Pamela Salyer and Tim McCoy
These sections exhibit small (100-300 microns), well-defined, metal-rich grains, and up to 2mm chondrules and a few CAIs in a dark matrix of FeO-rich phyllosilicate. Polysynthetically twinned pyroxene is abundant. Silicates are unequilibrated; olivines range from Fa2-33, and pyroxenes from Fs1-23Wo0-2. These meteorites are CR2 chondrites and are similar enough to be initially paired.
Antarctic Meteorite Images for Sample DOM 10344
Thin Section Photo of Sample DOM 10344 in Plane-Polarized Light with 1.25X Magnification  Thin Section Photo of Sample DOM 10344 in Reflected Light with 1.25X Magnification  Thin Section Photo of Sample DOM 10344 in Cross-Polarized Light with 1.25X Magnification  Thin Section Photo of Sample DOM 10344 in Plane-Polarized Light with 2.5X Magnification 
Thin Section Photo of Sample DOM 10344 in Reflected Light with 2.5X Magnification  Thin Section Photo of Sample DOM 10344 in Cross-Polarized Light with 2.5X Magnification  Lab Photo of Sample DOM 10344 Displaying North Orientation. 

Writeup from AMN 37(2):
Reclassification Notes (AMN 37,2)
Petrographic studies and INAA data provided by Alan Rubin and John Wasson (UCLA) indicate that DOM 10344 is an LL3 chondrite, probably LL3.4.

DOM 10344 has higher sulfide contents than a typical CR2. It has Radial Pyroxene and cryptocrystalline chondrules, which are very rare in CRs, and it has few igneous rims, which are common in CRs. UCLA probe data show Fa10.5±7.5 (n=16) and Fs10.9±8.7 (n=6). The PMD of Fa is 55, corresponding to subtype <3.4. It has rare clear, colorless, isotropic glass, approximately the same as for type 3.4-3.5 OC. Its Cr2O3 in ferroan olivine is 0.07±0.07 wt%, corresponding to type >3.2. So, it is probably best classified as an LL3.4.

In addition, INAA data show 472 µg/g Co and 426 ng/g Ir in DOM 10344. This compares with a mean of 490 and 360 for LL chondrites (from Wasson and Kallemeyn, 1988) and 667 and 642 for CR chondrites from Kallemeyn et al. (1994). Additionally, DOM 10344 contains 129 ng/g Au which does not distinguish it from a CR, but is nonetheless consistent with LL.
Data from:
  MB103
  Table 0
  Line 0:
Date:2010
Mass (g):68.4
Pieces:1
Class:CR2
Weathering grade:B
Fayalite (mol%):3-33
Ferrosilite (mol%):3-13
Wollastonite (mol%):0-2
Classifier:SI
Type spec mass (g):68.4
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 37(1) (2014), JSC, Houston
Published in Antarctic Meteorite Newsletter 37(2) (2014), JSC, Houston
Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Geography:

Antarctica
Coordinates:Unknown.

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

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