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Northwest Africa 10238
Basic information Name: Northwest Africa 10238
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10238
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 155 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 514 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 4 Sep 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 10238 (NWA 10238)

(Northwest Africa)

Purchased: 2014 Jan

Classification: Ureilite

History: Purchased by Fabien Kuntz in January 2014 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Protogranular aggregate of olivine and low-Ca pyroxene with accessory metal. Olivine grains have more magnesian, reduced rims containing blebs of Fe metal and microdiamond, and consist of polygonal subgrains; both orthopyroxene and pigeonite are present.

Geochemistry: Olivine (cores Fa23.3-23.4, rim Fa11.9), orthopyroxene (Fs17.4Wo3.9), pigeonite (Fs17.8Wo5.8; Fs20.1Wo11.6).

Classification: Ureilite.

Specimens: 24.67 g including one polished thin section at PSF; main mass with Kuntz.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2014 Jan
Mass (g):155
Pieces:1
Class:Ureilite
Shock stage:high
Weathering grade:low
Fayalite (mol%):23.3-23.4; 11.9
Ferrosilite (mol%):17.4-17.8; 20.1
Wollastonite (mol%):3.9-5.8; 11.6
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):24.67
Type spec location:PSF
Main mass:F. Kuntz
Comments:K244; submitted by A. Irving
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6900 approved meteorites from (Northwest Africa) (plus 2035 unapproved names)

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