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Northwest Africa 8703
Basic information Name: Northwest Africa 8703
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8703
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 461 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Diogenite
Recommended:  Diogenite    [explanation]

This is 1 of 465 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 28 Dec 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8703 (NWA 8703)

(Northwest Africa)

Purchased: 2014 Jul

Classification: HED achondrite (Diogenite)

History: Purchased by Stefan Ralew in July 2014 from a dealer in Foum El Hisn, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia composed of angular grains of orthopyroxene (up to 5.1 mm, with inclusions of chromite) in a matrix dominated by orthopyroxene with accessory clinopyroxene, chromite, troilite and rare Ni-free metal (stained).

Geochemistry: Orthopyroxene (Fs28.4-28.7Wo3.6-3.9, FeO/MnO = 29, N = 3), clinopyroxene (Fs11.3-12.0Wo44.6-42.4, FeO/MnO = 20-24, N = 2).

Classification: Diogenite.

Specimens: 20.1 g including one polished thin section at UWB; main mass with Ralew.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Foum El Hisn
Date:P 2014 Jul
Mass (g):461
Pieces:2
Class:Diogenite
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):28.4-28.7
Wollastonite (mol%):3.6-3.9
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.1
Type spec location:UWB
Main mass:S. Ralew
Comments:RA14-3; 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)
Ralew: Stefan Ralew, Kunibertstra├če 29, 12524 Berlin, Germany; Website (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
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7859 approved meteorites from (Northwest Africa) (plus 1961 unapproved names)

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