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Northwest Africa 7674
Basic information Name: Northwest Africa 7674
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7674
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 225 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  Lodranite
Recommended:  Lodranite    [explanation]

This is 1 of 80 approved meteorites classified as Lodranite.   [show all]
Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites
Comments: Approved 14 Nov 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7674 (NWA 7674)

(Northwest Africa)

Purchased: 2012 Dec

Classification: Primitive achondrite (Lodranite)

History: Purchased in Temara, Morocco by Adam Aaronson in December 2012.

Petrography: (A. Irving and S. Kuehner, UWS) Protogranular texture with grainsize from 0.3-0.8 mm. Constituent minerals are olivine, orthopyroxene, clinopyroxene, chromite, altered kamacite, taenite, and troilite.

Geochemistry: Olivine (Fa10.2-12.4; FeO/MnO = 19-21), orthopyroxene (Fs10.9-11.0Wo4.0-3.8; FeO/MnO = 13), clinopyroxene (Fs5.7-5.8Wo40.1-40.2; FeO/MnO = 9-10). Oxygen isotopes (D. Rumble, CIW): analyses of acid-washed silicate material by laser fluorination gave, respectively: δ17O = 1.004, 0.764; δ18O = 3.488, 3.281; Δ17O = -0.831, -0.962 (all per mil).

Classification: Lodranite.

Specimens: 21.4 g of material and one polished thin section at UWB. The remaining material is held by Aaronson.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Temara
Date:P 2012 Dec
Mass (g):225
Pieces:1
Class:Lodranite
Shock stage:low
Weathering grade:low
Fayalite (mol%):10.2-12.4
Ferrosilite (mol%):10.9-11.0
Wollastonite (mol%):4.0-3.8
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21.4
Type spec location:UWB
Main mass:A. Aaronson
Comments:M1471; submitted by A. Irving
Plots: O isotopes:  
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)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
CIW: Carnegie Insitution Washington, Geophysical Laboratory, 5251 Broad Branch Rd., NW, Washington DC 20015, United States (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7035 approved meteorites from (Northwest Africa) (plus 2000 unapproved names)

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