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Northwest Africa 8251
Basic information Name: Northwest Africa 8251
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8251
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 853 g
Meteoritical Bulletin:  MB 103  (2014)  Lodranite
Recommended:  Lodranite    [explanation]

This is 1 of 93 approved meteorites classified as Lodranite.   [show all]
Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites
Comments: Approved 18 May 2014
Writeup from MB 103:

Northwest Africa 8251 (NWA 8251)

(Northwest Africa)

Purchased: 2013 Dec

Classification: Primitive achondrite (Lodranite)

History: Purchased by Marcin Cimała in December 2013 from a dealer in Ouarzazate, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Matrix-poor breccia composed mainly of angular mineral grains (including bright green clinopyroxene) and sparse stained metal. Minerals are olivine, orthopyroxene, clinopyroxene, stained kamacite, troilite and chromite.

Geochemistry: Olivine (Fa11.7-11..8; FeO/MnO = 27-30), orthopyroxene (Fs10.5-10.7Wo4.9-4.0; FeO/MnO = 16), clinopyroxene (Fs5.0-5.7Wo43.8-44.6; FeO/MnO = 10-15). Oxygen isotopes (K. Ziegler, UNM): analyses of acid-washed subsamples by laser fluorination gave, respectively δ17O = 0.345, -0.184, -0.220, δ18O = 2.428, 2.359, 2.221, Δ17O = -0.937, -1.430, -1.393 per mil (for a TFL slope of 0.528).

Classification: Lodranite breccia. This material is likely paired with NWA 8118 and NWA 8216.

Specimens: 20.2 g including a polished thin section at UWB. The remainder is held by Mr. M. Cimała.

Data from:
  Table 0
  Line 0:
Place of purchase:Ouarzazate
Date:P 2013 Dec
Mass (g):853
Shock stage:low
Weathering grade:low to m
Fayalite (mol%):11.7-11.8
Ferrosilite (mol%):10.5-10.7; 5.0-5.7
Wollastonite (mol%):4.9-4.0; 43.8-44.6
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.2
Type spec location:UWB
Main mass:M. Cimala
Comments:MC116; submitted by A. Irving
Plots: O isotopes:  
   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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
References: 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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Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Domjan Svilkovic   
Paulo Anselmo Matioli (JN Science Museum)   
Piotr gural100   
Qi Lv      
Solar Anamnesis         
Woreczko Jan & Wadi            

     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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