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Northwest Africa 8307
Basic information Name: Northwest Africa 8307
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8307
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 418 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 515 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 6 Jun 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8307 (NWA 8307)

(Northwest Africa)

Purchased: 2012 Oct

Classification: Ureilite

History: Purchased by Marc Jost in October 2012 at the Munich Mineral Show.

Petrography: (A. Irving and S. Kuehner, UWS) Protogranular aggregate of olivine (with fairly thick, patchy, opaque metal-rich rims) and pigeonite.

Geochemistry: Olivine (core Fa22.1, rim Fa2.7), pigeonite (Fs18.2-18.3Wo9.8-10.1).

Classification: Ureilite.

Specimens: 22.2 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:Munich
Date:P 2012 Oct
Mass (g):417.5
Pieces:1
Class:Ureilite
Shock stage:moderate
Weathering grade:low
Fayalite (mol%):22.1
Ferrosilite (mol%):18.2-18.3
Wollastonite (mol%):9.8-10.1
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):22.2
Type spec location:UWB
Main mass:M. Jost
Comments:SJS12001; 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 7009 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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