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Northwest Africa 8678
Basic information Name: Northwest Africa 8678
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8678
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 279 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 516 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 12 Dec 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8678 (NWA 8678)

(Northwest Africa)

Purchased: 2014 May

Classification: Ureilite

History: Purchased by John Higgins in May 2014 from a dealer in Laayoune.

Petrography: (A. Irving and S. Kuehner, UWS) Protogranular aggregate of olivine and pigeonite with accessory blades of graphite. Olivine grains have marginal and cross-cutting zones of more magnesian olivine plus fine grained iron metal. Some thin calcite veins are present.

Geochemistry: Olivine (cores Fa20.7-20.8, Cr2O3 = 0.7 wt.%, N = 2; rim Fa 11.9), pigeonite (Fs17.2-17.3Wo6.9-7.1, N = 2).

Classification: Ureilite.

Specimens: 24.5 g including one polished thin section at UWB. The remaining material is held by Mr. J. Higgins.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Laayoune
Date:P 2014 May
Mass (g):279
Pieces:1
Class:Ureilite
Shock stage:high
Weathering grade:low
Fayalite (mol%):20.7-20.8
Ferrosilite (mol%):17.2-17.3
Wollastonite (mol%):6.9-7.1
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):24.5
Type spec location:UWB
Main mass:J. Higgins
Comments:JH14-15; 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)
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 7035 approved meteorites from (Northwest Africa) (plus 2000 unapproved names)

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