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Northwest Africa 10647
Basic information Name: Northwest Africa 10647
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10647
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 345 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  Eucrite-unbr
Recommended:  Eucrite-unbr    [explanation]

This is 1 of 89 approved meteorites classified as Eucrite-unbr.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 24 May 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10647 (NWA 10647)

(Northwest Africa)

Purchased: 2015 Dec

Classification: HED achondrite (Eucrite, unbrecciated)

History: Purchased by John Curchin in December 2015 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Subophitic texture. Composed predominantly of prismatic, simply-twinned grains of exsolved pigeonite (up to 4 mm long) and laths of calcic plagioclase with accessory silica polymorph, ilmenite, stained Ni-free metal, troilite and rare zircon. Microfaults are present in places.

Geochemistry: Low-Ca pyroxene host (Fs56.8-61.5Wo6.1-2.9, FeO/MnO = 29-30, N = 3), clinopyroxene exsolution lamellae (Fs26.0-26.3Wo43.6-43.5, FeO/MnO = 28, N = 2), plagioclase (An88.8-91.6Or0.3-0.2, N = 2).

Classification: Eucrite (unbrecciated).

Specimens: 23.57 g including one polished thin section at UWB; remainder with Mr. J. Curchin.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2015 Dec
Mass (g):345
Pieces:1
Class:Eucrite-unbr
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):56.8-61.5; 26.0-26.3
Wollastonite (mol%):6.1-2.9; 43.6-43.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):23.57
Type spec location:UWB
Main mass:J. Curchin
Comments:JC16-1; 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. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6759 approved meteorites from (Northwest Africa) (plus 2047 unapproved names)

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