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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
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Lodranite
Recommended:  Lodranite    [explanation]

This is 1 of 78 approved meteorites classified as Lodranite.   [show all]
Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites
Comments: Approved 18 May 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8251 (NWA 8251)

(Northwest Africa)

Purchased: 2013 Dec

Classification: Primitive achondrite (Lodranite)

History: Purchased by Marcin Cimala 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. Cimala.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Ouarzazate
Date:P 2013 Dec
Mass (g):853
Pieces:5
Class:Lodranite
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:  
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. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Piotr gural100   
Solar Anamnesis   
Woreczko Jan & Wadi      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6461 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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