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Northwest Africa 8254
Basic information Name: Northwest Africa 8254
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8254
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 105 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Eucrite-br
Recommended:  Eucrite-br    [explanation]

This is 1 of 191 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 25 Nov 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8254 (NWA 8254)

(Northwest Africa)

Purchased: 2013

Classification: HED achondrite (Eucrite, brecciated)

History: Purchased in Morocco in 2013 by Hmani Inc.

Petrography: (A. Irving and S. Kuehner, UWS) Eucrite breccia containing irregularly distributed, ragged grains of stained kamacite (with minor associated taenite). The predominant clast lithology is basaltic eucrite, but a variety of pyroxenes is present as mineral clasts as well as calcic plagioclase, fayalitic olivine, ilmenite (with inclusions of baddeleyite), Al-bearing chromite and troilite.

Geochemistry: Pigeonite (Fs34.7Wo5.4, FeO/MnO = 33; Fs43.5-47.2Wo27.0-22.7, FeO/MnO = 35-37), subcalcic augite (Fs37.8Wo33.4, FeO/MnO = 33), orthopyroxene (Fs62.9Wo4.5, FeO/MnO = 35), olivine (Fa83.3-85.2, FeO/MnO = 43-45).

Classification: Eucrite-br, metal-rich.

Specimens: 20.5 g including one polished thin section at UWB. The remaining material is held by Hmani.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2013
Mass (g):105
Pieces:1
Class:Eucrite-br
Shock stage:low
Weathering grade:low
Fayalite (mol%):83.3-85.2
Ferrosilite (mol%):34.7; 43.5-47.2; 37.8; 62.9
Wollastonite (mol%):5.4; 27.0-22.7; 33.4; 4.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.5
Type spec location:UWB
Main mass:Hmani Inc.
Comments:OT14; submitted by A. Irving
Institutions
   and collections
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)
Hmani: A. Hmani Moroccan Imports, 13 rue Jules Hardouin Mansart, 92600 Asnières, France (private address)
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:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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