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Northwest Africa 8124
Basic information Name: Northwest Africa 8124
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8124
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 238 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  LL3
Recommended:  LL3    [explanation]

This is 1 of 462 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 18 Dec 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 8124 (NWA 8124)

(Northwest Africa)

Purchased: 2013 Apr

Classification: Ordinary chondrite (LL3)

History: Purchased by Sergey Vasiliev and Marc Jost in April 2013 from a dealer in Laayoune, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Large, well-formed, very closely packed chondrules within a sparse, relatively metal-poor matrix. Minerals are olivine, orthopyroxene, pigeonite, subcalcic augite, sodic plagioclase, chromite, altered kamacite and troilite.

Geochemistry: Olivine (Fa0.6-43.6, N = 8; Cr2O3 in ferroan examples is 0.08-0.13 wt.%, mean 0.10±0.02 wt.%, N = 6), orthopyroxene (Fs2.3-8.1Wo0.2-0.6, N = 3), pigeonite (Fs29.0Wo14.6), subcalcic augite (Fs42.3Wo27.0). Oxygen isotopes (K. Ziegler, UNM): analyses by laser fluorination of acid-washed subsamples gave, respectively δ17O 3.326, 2.568, 3.348, 3.292; δ18O 5.242, 4.718, 5.190, 5.470; Δ17O -\0.558, 0.077, 0.608, 0.404 per mil (for a TFL slope of 0.528). Magnetic susceptibility log χ (× 10-9 m3/kg) = 3.80.

Classification: Ordinary chondrite (LL3). Chondrule sizes and metal content (magnetic susceptibility) are consistent with LL.

Specimens: 24.6 g including one polished thin section at UWB. The remainder is held jointly by S. Vasiliev and M. Jost.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Laayoune
Date:P 2013 Apr
Mass (g):238
Pieces:1
Class:LL3
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):0.6-43.6 (N=8)
Ferrosilite (mol%):2.3-8.1 (N=3)
Wollastonite (mol%):0.2-0.6
Magnetic suscept.:3.80
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):24.6
Type spec location:UWB
Main mass:S. Vasiliev & M. Jost
Comments:SVMJ07; submitted by A. Irving
Plots: O isotopes:  
Institutions
   and collections		 UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: 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:
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Sergey Vasiliev   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9305 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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