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Northwest Africa 10854
Basic information Name: Northwest Africa 10854
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10854
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 741 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  L3
Recommended:  L3    [explanation]

This is 1 of 676 approved meteorites classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 27 Sep 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10854 (NWA 10854)

(Northwest Africa)

Purchased: 2016 May

Classification: Ordinary chondrite (L3)

History: Purchased by Aras Jonikas in May 2016 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Closely packed, well-formed chondrules (apparent diameter 700±400 μm) are set in a sparse fine grained, black matrix.

Geochemistry: Olivine (Fa0.6-47.0, Cr2O3 in ferroan examples 0.06-0.19 wt.%, mean 0.13±0.05 wt.%, N = 8), orthopyroxene (Fs2.5-20.9Wo0.4-1.8, N = 3), subcalcic augite (Fs23.3Wo33.8), augite (Fs15.1Wo38.4). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.81.

Classification: Ordinary chondrite (L3).

Specimens: 21.82 g including one polished thin section at PSF; remainder with Mr. A. Jonikas.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2016 May
Mass (g):741
Pieces:1
Class:L3
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):0.6-47.0
Ferrosilite (mol%):2.5-20.9
Wollastonite (mol%):0.4-1.8
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21.82
Type spec location:PSF
Main mass:A. Jonikas
Comments:AJ16-16; submitted by A. Irving
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Denis gourgues      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6900 approved meteorites from (Northwest Africa) (plus 2035 unapproved names)

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