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Northwest Africa 8308
Basic information Name: Northwest Africa 8308
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8308
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 605 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 386 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 6 Jun 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8308 (NWA 8308)

(Northwest Africa)

Purchased: 2012 Aug

Classification: HED achondrite (Howardite)

History: Purchased from a Moroccan dealer in Brügg, Switzerland in August 2012 by Marc Jost.

Petrography: (A. Irving and S. Kuehner, UWS) Fresh fragmental breccia composed of lithic clasts of gabbroic eucrite, diogenite (~10 vol.%) and rare basaltic eucrite, plus mineral clasts of various pyroxenes, calcic plagioclase, silica polymorph, Ti-poor chromite, ilmenite, troilite and minor Ni-free metal, in a finer matrix of the same phases.

Geochemistry: Diogenitic orthopyroxene (Fs24.5-27.1Wo1.7-2.4, FeO/MnO = 32-34), orthopyroxene (Fs47.3Wo3.3, FeO/MnO = 31), augite (Fs15.8-20.2Wo42.3-42.1, FeO/MnO = 24-29), olivine (Fa44.0-44.3, FeO/MnO = 49).

Classification: Howardite.

Specimens: 21.4 g including one polished thin section at UWB. The remaining material is held by Mr. M. Jost.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Brügg, Switzerland
Date:P 2012 Aug
Mass (g):604.5
Pieces:1
Class:Howardite
Shock stage:low
Weathering grade:low
Fayalite (mol%):44.0-44.3
Ferrosilite (mol%):47.3; 15.8-20.2
Wollastonite (mol%):3.3; 42.3-42.1
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):21.4
Type spec location:UWB
Main mass:M. Jost
Comments:SJS12003; 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)
SJS: Space Jewels Switzerland, 2555 Brügg, Switzerland (private address; updated 3 Jan 2010)
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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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7483 approved meteorites from (Northwest Africa) (plus 1994 unapproved names)

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